booster? dr. jha standing by to answer your questions tonight. also developing late today, house lawmakers including nine republicans voting to recommend criminal contempt charges against steve bannon for refusing to show up to answer questions about what led to the january 6th attack on the capitol. and the audio, what bannon told his listeners just one day before the attack. jon karl standing by. also at this hour, the news just coming in tonight on queen elizabeth, spending the night in a hospital. we'll go live to london. the americans kidnapped in haiti, held for days now. and tonight, the chilling threat from the gang leader. the video on social media. the demands. and why authorities are studying this video message. authorities late today in california on three members of a family dying after a hike. their dog dying, too, and now we learn how they died. the findings revealed. the storms in the west. several days oherods snow on. and then nt tonight with the new outlook for winter across this country. and spirit day, america strong. good evening and it's great to have you with us here on a thursday night and we are following several developing stories as we come on the air tonight. the cdc a short time ago on boosters. there is news tonight on queen elizabeth spending the night in the hospital. but we do begin this evening with news just coming in moments ago from the fbi. they now say the human remains found in a florida nature reserve are those of brian laundrie. that confirmation tonight from the fbi after this month-long search now for brian laundrie. much of it centered on the difficult swampy terrain in florida. not far from his family home. all of it, of course, in the case of gabby petito. e scernd more than 24 hos backpack and notebook and what were believe remains. the county medical examiner was called to the scene immediately. it was laundrie's parents who led authorities along the trail where his remains were found and their attorney tonight clarifying the timeline of this discovery. and tonight, the petito and laundrie families both reacting to this news from the fbi. abc's trevor ault leading us off from florida tonight. >> reporter: tonight, authorities confirming the remains discovered in florida's carlton nature reserve are those of gabby petito's boyfriend, brian laundrie. the north port police department saying those remains are skeletal, and the fbi making the confirmation using a comparison of dental records. the grim discovery made off a nature trail alongside laundrie's backpack and notebook, found a month after his disappearance in an area previously under water. >> these are very, very difficult conditions. i mean, you're searching in areas that you just can't walk up and look. these areas are huge and they're covered by water. >> reporter: the announcement marks the end of a nationwide manhunt for laundrie, still the only named person of interest in petito's murder, after he returned home from their cross-country road trip without her. and now sparking further questions, the fact his parents led authorities along the trail wednesday where the remains were found. >> this is an area that we initially notified the fbi that brian liked to hike in. >> reporter: their attorney now clarifying the timeline, telling cnn any suggestion the laundries planted those personal items is "hogwash." saying wednesday chris laundrie found a bag belonging to brian off one side of the trail, but law enforcement located brian's backpack and then the remains. >> at that point, the laundries were notified that there was also remains near the backpack and they were asked to leave the preserve. >> reporter: now, an autopsy will determine brian laundrie's cause of death and david, his parents' attorney says the family is asking for privacy and the attorney for gabby petito's family says they are not giving any interviews or statements right now, because they are grieving the loss of their daughter. david? >> trevor ault leading us off with the news from the fbi tonight. trevor, thank you. now to the other major news just before we came on tonight. the cdc on booster shots, clearing another major hurdle at this hour. late today, an independent cdc advisory panel voting unanimously to recommend boosters from moderna and johnson & johnson now. boosters for all three vaccines now in this country. and the panel also paving the way to allow mixing and matching when getting your booster. tonight, only one step left, cdc director dr. rochelle walensky must sign off. every indication that she will and quickly. and that means millions of americans could be getting their boosters by this weekend. dr. ashish jha standing by to answer your questions in a moment. we'll ask him about mixing and matching. but first, whit johnson here and what this key cdc panel just decided. >> reporter: tonight, those long awaited recommendations for moderna and johnson & johnson booster shots, along with guidance forxing and matching boters. >> vote number one passes with 15 yeses and 0 nos. >> reporter: for people who got today voting unanimously to oos least six months after vaccination for people over 65 and any adult whose health or work puts them at higher risk. and for the 15 millipients, a sd dose recommended at least two months after vaccination for anyone over 18. the panel also allowing americans to have flexibility to choose a different vra bne nd >> well, i think we've gotten more clarity because it's leveling the playing field across all three vaccines. now there's an openness to boosting no matter what vaccine you got, but there's still some confusion. >> reporter: so many have been looking for guidance on booster shots. >> i would like to talk to my doctor, just to get -- just to be informed. >> reporter: the recommendations quin got the johnson & johnson shot, after a limited study suggested they might benefit more from an mrna booster, meaning pfizer or shot, antibodies rose four fold. but a booster with pfizer sent those antibodies up 35 fold. and with a moderna boost, they jumped 76 fold. still, no idence yet that mixing leads to greater long in chicago, nathan bean got the j&j one-shot and experienced a breakthrough infection four months later. >> night two of coronavirus. >> reporter: after talking with getting a moderna boos precaution before seeing his mother, who is immunocompromised. >> i was excited to be able to get this moderna shot. we're going to be able to celebrate christmas and just celebrate being with each other for the first time in 2 1/2 years. >> whit johnson back with us here tonight, and whit, with the sign-o the cdc director, then how soon could we see these boosters roll out across the country? >> reporter: david, some people will be able to go out and get these booster shots as early as tomorrow at pharmacies, vaccinatn dss the country. the white house insists there is enough supply in the pipeline for all eligible adults to be able to go out and get a booster shot when they need them. david? >> all right, whit joh the breaking news fromyou at hoe questions tonight. so, let's bring in, as always, dr. ashish jha, dean of the brown university sh. back with us tonight. dr. jha, always great to have you with us. two key questions tonight. first, we know, you've been saying this here all way, that these vaccines are working. the efficacy holding up pretty well, but what does the data show already? >> goodh more protection do yovi yes, thanks for having me back. the boosters are really helpful. while the vaccines are working well in preventing severe infections, we are seeing breakthroughs and we see very clear evidence now that boosters, especially for high risk individuals, make an enormous difference in those infections. >> i wanted to ask you about this small study we've been reporting on here this week involving the johnson & johnson one-shot vaccine. this particular study shows that mixing and matching with an mrna vaccine, pfizer or moderna, one of their boosters, and that the study actually saw significant results. do you suggest considering this? >> yeah, so, what we know about mixing and matching is the following. first of all, it's very safe tot first, you can get a different vaccine as a booster and it's going to work fine. i don't think we have long-term followup that says one is better than the other. so, as far as i'm concerned, if you want to mix and match, that's fine. if you want to stick with the original, that's perfectly fine, as well. >> dr. jha helping us to break through it all once again tonight. always great to have you, doctor, see you soon. we are also following a two dropping headline o movie shoot tonight. here's matt gutman developments. >> reporter: tonight, the deadly real life horror unfolding on the set of axico. >> we have a person who was shot accidentally. >> reporter: authorities confirming a prop gun discharged during the filming of a scene of the upcoming western movie "rust" starring alec baldwin. twd -year-old woman was images from the old church set blocked off. officials halting production of the film. the sheriff's department saying that this remains an active investigation. investigators ar at that movie set turned possible crime scene and police investigation will likely hinge on why and how that prop gun misfired in what appears to be a fatal accident. david? >> all right, matt gutman tonight. matt, thanks. we continue with the news here and from capitol hill late today, the house voting to move forward, including nine republicans, voting to recommend criminal contempt charges against steve bannon for refusing to show up to answer questions about what led up to the january 6th attack of the capitol. and tonight here, the video, the audio, what bannon told his listeners just one day before the attack. here's our chief washington correspondent jonathan karl now. >> reporter: nine republicans joined all house democrats today in voting to hold steve bannon in criminal contempt of congress, asking the justice department to pr >> steve bannon has led us down cooperate in any way with our investigation. >> reporter: the january 6th committee argued that the american people have a right to know what led up to moments like this. >> ahh! help! >> reporter: the contempt resolution pointed to bannon's own words on his podcast the day before the capitol riot. >> all hell is going to break loose tomorrow. >> reporter: bannon telling trump supporters, "this is your time in history." >> all i can say is, strap in. you have made this happen and tomorrow, it's game day. >> mr. bannon's own public statements make clear he knew what was going to happen before it did. >> reporter: still, the vast majority of republicans stood by bannon.>> steve bannon's polits,o th'rabusintheir po >> reporter: trump himself weighed in today, lying about 6 was t noa riot at all, saying, quote, "the insurrection took onr 3rd, election day. january 6th was the protest." liz cheney today directly responding. >> today, madam speaker, the former president suggested that the violence was justified. the republican members of this body have to understand, have to recognize that there's a moment when politics must stop if we want to defend and protect our institutions. a violent assault on the capitol to stop a constitutional process of counting electoral votes is that moment. >> and jon karl with us live from washington tonight. and jon, it's now up to the justice department, of course, to decide whether to prosecute steve bannon with criminal of course, everyone studying every word from the attorney general today and there weren't many. >> reporter: no, and david, congress has no power itself to prosecute, so it is entirely up to the justice department and the attorney general. attorney general merrick garland wouldn't say today what he is going to do, saying only the doj, quote, will apply the facts and the law and make a decision consistent with the principles of prosecution. david? >> jon karl following this all day long for us. jon, thank you. and overseas tonight and we're following a developing headline at this hour involving queen elizabeth. we have learned that she spent the night in the hospital. she's now back home at windsor castle, but of course, a trip to the hospital always gets attentio so, let's bring in our foreign correspondent james longman live in london tonight. and james, what do we know about the queen's visit to the hospital? the queen is back at windsor l,- castle tonight. we don't know exactly why she went into the hospital. buckingham palace is always very tight-lipped about her majesty's health. but we do know it was a very short stay. she went in yesterday, she came out at lunchtime today. she was last seen hosting a reception on tuesday night at windsor castle after which she was told by her doctors that she could get some rest, so, that is what she did. the palace has told abc news she went into the hospital for some, quote, preliminary investigations and that she is in good spirits. i think it's really important to say that a source told abc news on tuesday that this is not , a at windsor castle and she spent today behind her desk performing some light duties. david? >> all right, well wishes from the u.s. for the queen tonight. james, thank you. we're going to turn now to haiti and a da canadian kidnapped by a violent gang there. that gang now threatening to kill them if a $17 million ransom is not paid. and tonight, u.s. officials are now looking closely at this video, showing a man who authorities say is the gang bl. meantime, haiti is descending u into chaos tonight. fires burning across the capital. protesters in the streets. it appears police are losing control in many places.s of the hostages. marcus moore from haiti again tonight. joseph, thepe gang leader authorities believe is holding if he doesn't get what he wants, he will put a bullet in the heads of the americans. authorities investigating the video circulating online that shows him standing by coffins he says hold five members of his h police, saying, "i will make you guys cry blood." authorities believe his 400 mawozo gang is holding 16 americans and a canadian hostage. among them, five children, including an 8-month-old. the fbi in contact with the gang, who are demanding a million dollars ransom per person. >> these families are from communities in wisconsin, ohio, michigan, tennessee, pennsylvania, oregon and >> reporter: today, a spokesperson from the ohio-based christian aid ministries group read a statement from the families and asked for a day of prayer for them. >> we thank him, that he is god. >> reporter: meanwhile, on the streets of port-au-prince today, demonstrators burned tires and . part of ongoing unrest over the dire economic situation gripping violence on the streets. late today, the chief of police stepped down. the dethe same.ma david, all day today, we have go the air. the situation here so volatile, the u.s. embassy sent out a new alert to americans in the country to and to rema vigilant. >> marcus and our team on the ground there. please stay safe.ank you. there is a inf infrastructure problem unfolding in benton harbor, michigan, tonight. that city declarina g state of emergency after a water main break there and a system-wide loss of water pressure. benton harbor had already been on notice because of high levels of lead in the water. officials recommending the use of bottled water for drinking and cooking. when we come back, authorities in california moments ago on three members of a familytoo. tonight, they have revealed how they died. toth a lot of moving parts. you want everything to be on autopilot. and to be prepared if anything changes. with ibm, you can do both. your business can bring data together across your clouds, from suppliers to shippers, to the factory floor. so whatever comes your way, the wheels keep moving. seamlessly modernizing your operations, that's why so many businesses work with ibm. e blood when you brush or can be a sign of early gum damage. parodontax active gum repair kills to help keep the gum sealed tight. parodontax active gum repair toothpaste neeze. 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kelly >> joining millions who are wearing purple for spirit day to show that we're taking a stand against the bullying of lgbtq-plus youth.>> the world o. from the cleveland indians to the new york yankees tweeting, "today and all days, we take a stand against lgbtq-plus bullying." wearing purple in every corner of the country for spirit day, to stop bullying in schools. students gathering from portland, oregon, to hoffman estates, illinois, with their own groups, letting their peers know, we're here for you. on this spirit day, so many standing together as one against bullying. it is so important and we loved all of those messages today and we thank you for watching here tonight. we'll see you right back here tomorrow. good night. the community as the former head of oakland cease fire, an organization that aims to reduce violence. he retired from the oakland police department in 2019 after 28 years. police are asking anyone with information to contact them. abc 7 news. dan: thank you. we wish him the very best. showers still moving through the bay area. he saw minor flooding in san francisco earlieto