There has not been confirmed communication with the gunman since about 10 30 this morning. Reporter the Veterans Home stayed on lockdown for eight hours before police made their room. We made our entry into the room where we felt the00s were being held and unfortunately made the discovery of three deceased females and one deceased male suspect. Reporter wong was award four medals including one for marksmanship while serving in the army infantry. He spent a year in afghanistan. She would sleep in her office, more often than not, because because she had to be here for covering a shift overnight if another staff member couldnt be. Reporter there are security guards here at the Veterans Home, but the association that represents them says they are not allowed to carry a weapon. The California Department of Veterans Affairs now says it will be reviewing all security procedures here. Reena. Ninan carter, thank you. Near los angeles, two Pomona Police officers were shot last night in the line of duty. One of them died. Police today escorted the body of officer Judith Castro to the corners office. He was 30 years old. The other officer is expected to recover. The Justice Department announced today that its taking steps to ban bump stockes. Theyre the attachments that turn semiautomatic rifles into machine guns. President trump ordered the Justice Department to look into the ban after the Parkland School massacre last month. A bump stock was not used in that attack, but they were used in last years las vegas massacre. The ink was barely dry on floridas new gun law when the n. R. A. Filed a federal lawsuit yesterday, arguing that its unconstitutional. Nikki battiste has more on this. Reporter the families of parkland shooting victims watched governor rick scott sign a new gun bill into law. But the National Rifle association called the measure invalid. Im going to do what i think are commonsense solution. Reporter the legislation, named for Marjory Stoneman douglas, raised the minimum age to purchase firearms from 18 to 21. The n. R. A. Says that age limit is an affront to the Second Amendment and particularly offensive respect to young women. In florida, 19yearold Britney Hamalainen says she wanted to buy a firearm to defend herself. Fidont feel comfortable, then i would feel way more comfortable with a gun. Reporter jamal greene is a constitutional law professor at columbia university. The states and the federal government distinguish between 21yearolds and 20yearolds for drinking, for example. This is not out of the ordinary. Reporter greene says n. R. A. s lawsuit does not have much chance of success. The Supreme Court has said that even though people have a right to bear arms, it can be limited. Reporter only 25 of Florida House democrats voted for the bill, which provides new Mental Health programs for schools and allows some teachers to be armed. But florida legislators rejected a ban on all thestyle rifles, something fought for by parkland shooting survivors. Greene says floridas move could inspire legislators in other states. Given the recent activism around this issue, i can very easily see a number of states that have age limits of 18, as florida did before, raising their age to 21. Ninan these students push so hard in parkland for new gun laws. Whats next for them, nikki . Reporter theyre leading a nationwide School Walkout on wednesday which marks one month since the Parkland School shooting. Student will leave class to stand in solidarity for 17 minutes to honor the 17 lives lost at stoneman douglas. Ninan well, President Trump said today that he believes north korea will stick to its pledge to suspend missile tests before and during his summit this spring with kim jongun. In a tweet trump noted that north korea has not test tired a rocket since november. The president is making a quick visit tonight to pennsylvania. Heres errol barnett. Lets see what happens. Lets see what happens. Reporter at a rally for a local republican congressional candidate in pennsylvania, President Trump spoke at length about his upcoming meeting with north Korean Leader kim jongun. North koreas tough. Theyre Testing Nuclear weapons. Reporter mr. Trump told the crowd north korea promised to halt missile tests ahead of talks, but he made no promises. Who know . If it happens, if it doesnt happen. I may leave fast or we may sit down and make the greatest deal for the world and for all of these countries. Reporter on friday, press secretary Sarah Sanders suggested the meeting comes with preconditions of piong yangs denuclearization. Denuclearization. Reporter secretary of state rex tillerson, who was initially doubtful of talks before it was announced, now says sanctions pressure is working. There really is no one in the administration who has facetoface experience talking to north koreaians. Reporter joel wit conducted previous negotiations with pyongyang. Whats the biggest risk here. The biggest risk here is that the administration ha may not pr this meeting. Reporter now as the white house takes steps to set up these talks, expected to take place within the next few months, it still needs to assemble a capable team. The top u. S. Envoy to north korea resigned recently, and there is currently no u. S. Ambassador in south korea. Reena. Ninan thanks so much, errol. Well, british officials had an emergency meeting today after a former spy, a double agent who worked for both britain and russia, was poisoned. Roxana saberi has the latest. Reporter the normally quiet english city of salisbury has transformed into a crime scene. On saturday, military personnel removed an bloons that may have been contaminated in the poisoning of the former russian spy. And at the cemetery where his wife is buried, investigators in hazmat suits expanded their search for clues. The u. K. s home secretary, amber rudd, said saturday the probe is making progress fast. Theres over 200 witnesses involved, and theres over 240 pieces of evidence. Reporter the police are reviewing hours of cctv footage from sunday, including these new images. They show what appears to be a man and a younger woman walking together, as another woman with a dog passes them. Minutes later, a police car speeds by toward the area where scriepal and his daughter, yulia, were found on a park bench unconscious. British Authorities Say the pair were exposed to a nerve agent. London University Professor andrea cella they say kind of statesponsored thing. You dont make nerve agents in the shed at the bottom of your garden. Reporter the British Government says its too electoral to lay blame but suspicions are falling on russia. Skripal was arrested in russia for spying on the british. He did jail time before coming to the u. K. As part of a prisoner swap in 2010. Russian officials have ridiculed suggestions that the kremlin was behind sundays attack, and on russian state tv, this anchor warned, its rare that traitors live in peace until a ripe old age. Jiep and his daughter remain in critical condition, and one of the first responding officers is still very ill but is able to speak again. Reena, he released a statement saying shes no hero. Ninan Roxana Saberi in london. Thanks, rock ana. Coming up next, the death toll toppedz 1,000 in a Syrian Government siege in a rebelheld area. And later, he started selling records at his fathers drugstore and built a billiondollar music empire. Ninan a Human Rights Watch group said today more than 1,000 people have been killed in the Syrian Governments brutal siege on Eastern Ghouta near damascus. At least 250 children are among the dead. Assads forces have been pounding the city for nearly three weeks trying to take it back from the opposition. Team u. S. A. Won five medals in the first day of competition at the paralympics in pyeongchang, south korea. That includes three gold medals. Kendall gretsch won the womens biathlon, and andrew kurka won the alpine downhill gold. Some outoftheworld items are being sold in maryland this weekend at the estate say the of the legendary astronaut of u. S. Senator john glenn. Items include a patch from the Discovery Mission in which glenn became the oldest person ever in space. Also available, his senate cuff links and chair. Glenns leather Bomber Jacket is off the market. It sold to the u. S. Marine museum for 27,000. A quick reminder to spring ahead tonight across the country, except in hawaii and most of the of arizona and some u. S. Territories. We set our clocks ahead one hour for Daylight Saving time, which begins at 2 00 a. M. Sunday. Up next, a famed los angeles hairstylist is killed in his own backyard. Was it part of a twisted plot . 48 hours investigates. Ninan tonight on 48 hours air, famed los angeles hair stylist is murdered in his own backyard. Was it a robbery gone wrong or the result of a twisted flotplott . Michelle miller investigates. New Surveillance Video of knockknock burglars caught in the act. Reporter so this is l. A. P. D. Footage. Yeah. They know what theyre doing, and they know what they want. Reporter gangs of the socalled knockknock burglars are reeked havoc in wealthy los angeles neighborhoods for several years. Since january, at least seven celebrities had hundreds of thousands of dollars worth of jewelry taken. Highprofile victims include 300,000 from former laker star, darren fisher. 175,000 for nikki minhaj. Reporter but back in january of 2017, they were linked with a murder for the first time. Fabio sementilli was a famous hair dresser and beauty executive. Everybody welcome fabio everybody fab here for another fab style friday. Fabio was bigger than life in the industry. I love it he was the iconic guy, the International Hairdresser that came to the u. S. Its beautiful he mentored so many people. I was so proud of him. Oh reporter fabio had worked with his sister, mirella, establishing themselveses on a global stage, and his wife, moncarks and their kids saw the benefits, including a beautiful home in los angeles. The house that monica wanted. My queen he called her. She loved it because it had a huge kitchen. Shes that he would come home, drop his bags, sweep her off her feet and dance with her. Detectives searched sementillis home for evidence of what led to his death. Reporter detectives were hoping there would be a Surveillance Video to help them solve fabios murder. And there was. A neighbor of fabios had a sophisticated surveillance system. You can see two men jogging towards fabios house, and 35 minutes later, leaving with his porsche. But to their surprise, it wasnt a breakin gone wrong that killed fabio. It was something much darker. In the end, d. N. A. Would break this case wide open, and months after the murder, a pair of arrests would shock just about everyone. Were here to announce the arrest of two individuals in connection with the murder of fabio sementilli. Im, like, are you sure . That was a huge shock. I was absolutely shocked. There wasnt a red flag. It was like a twist in a nightmare. Ninan you can see michelle millers full report who killed fabio . Tonight on 48 hours. Still ahead, we remember the towering figure in the music industry, the founder of Tower Records. Of records, tapes, and cds, Tower Records ruled the music industry. The chain was founded by russ solomon, claimed to be the Largest Record store in the known world. Solomon died last sunday at his home in sacramento, california, reportedly wild watching the oscars. Alex wagner has more on the record salesman who towrd above them all. At the Largest Record store in the known world, Tower Records. Reporter in a time when music couldnt be streamed or downloaded, Tower Records stood above its competition, with latenight hours, knowledgeable employees, and huge inventories , Tower Records was a goto for serious music fans. They could say, have you heard this . And they were like friends. Reporter the chain was founded in 1941 by russ solomon, who started selling used jukebox records out of his fathers sacramento drugstore. Solomon, who died this week at the age of 92, is being remembered as a visionary and a natural leader. He had really great ideas, and he could put it together. And he could also encourage other people to follow him. Thats why he had the reputation, and especially in the early years of his business, of being a pied piper. The people just love him. Reporter russ solomon and the rise of Tower Records are the subjects of the 2015 documentary all things must pass. I called the number on the sign. I said, you want to rent this place . The guy said, love to. And i made a deal, just like that. Reporter tower expanded from sacramento to San Francisco in 1968, and atpeak maintained more than 270 stores. Each location was different, with solomon giving individual store managers control of what records to stock and encouraging his musicloving employees to be themselves. I got a job at Tower Records because thats the only place i could get a job with my bleep haircut. That is the truth. Reporter towers success put solomon on forbes list of the 400 wealthiest americans. But the dawn of Digital Music downloads and a heavy corporate debt load led to the end of the record chain. After selling 1 billion worth of records in the 1990s, tower declared bankruptcy in 2004, and finally closed its doors in america in 2006. But 12 years on, Tower Records is still flourishing in japan, including a ninestory Flagship Store in tokyo. Alex wagner, cbs news, new york. Ninan when we return, a former first family tree has deep roots. President tyler, his son, and grandsons span almost the entire history of the u. S. Ninan we end tonight in southern virginia at the estate of the nations tenth president , john tyler. Hes known for being the first Vice President to become president , following the death of the chief executive, and for pushing for the annexation of texas. Did you also know he has two living grandsons, 156 years after his death. Chip reid explained. Reporter 89yearold Harrison Ruffin tyler is the grandson of u. S. President john tyler who was born in 1719. Yes, you heard that right just three generations, president tyler, his son lyon tyler, and grandson, harrison, span almost the entire history of the united states. But im still here. Reporter we met harrison and his son, william, at president tylers virginia estate. When you tell people that you are the greatgrandson and your gawght is the grandson of the tenth president of the united states, do they find it hard to believe . I find it hard to public upon laughs i think it has to do with second wives. Reporter much younger second wives. Heres how it happened. John tyler became process prt in 1841. He had eight children with his first, who died while he was in office. At 52, he married 22yearold julia gardiner. They had seven children, for a total of 15, the most of any president. He was 63 when son lyon tyler was born, whose first wife also died. Lyon, too, had a very young second wife. He was 75 when Harrison Tyler was born. President tyler renovated this house, Sherwood Forest plantation, with young julia in mind. This was the ballroom. John tylers wife was 30 years his younger, and she liked to party. Reporter liked to party. Yeah. And this was designed for the virginia reel. Reporter which was all the rage at the time. William says the house is haunt the. That is the ghost. Its amazing, you can see the curls coming down and a bonnet on top of her head. Its clearly a young girl. Theres no doubt. Reporter the ghostly image remained, even after being painted over. President tylers biggest accomplishment was the annexation of texas, but political ambition does not run in the family. You never thought of running for president yourself . No. Reporter you wouldnt want that job . Nope. Reporter would you want that job . Nope. I know better. Reporter instead of making history, they prefer to preserve it. Chip reid, cbs news, charles city, virginia. Ninan well, Harrison Tyler also has a brother three years old, Lyon Gardiner tyler jr. , was born in 1924. He, too, is also still alive. Well, thats the cbs weekend news for this saturday. Im reena ninan in new york. Thank you for joining us. The neighbor who ran in to the burning building and saved her. Now at 6 00, a san jose home blows up with a woman inside. The neighbor who ran into the burning building and saved her with no time to spare. But first we lost three Beautiful People yesterday. We also lost one of our heroes who clearly had demons. A heartbreaking new detail from the Veterans Home shooting. Weve learned there is a fourth victim. An unborn child. Good evening. Im juliette goodrich. Katie has new details on the suspect and a possible motive but we begin with andrea with what were learning about the victims. The pathway home behind me where the shooting took place is still closed and the six residents have been moved to housing. I and members of the pathway home family and the yountville family lost three Beautiful People yesterday. We also lost one of our heroes who clearly had demons. Reporter grief continues to overwhelm those who knew the victims and the suspected shooter in fridays tragedy at the pathway home. A Treatment Program for veterans from wars in afghanistan and iraq. This is not easy for any of us. And were just trying to figure it out one day at a time right now. Reporter people have been stopping by to drop off flowers for the victims. Deputies found the bodies of pathway home executive director christine loeber, clinical