of murder. reporter: after more than three decades, investigators believe they finally got their man in four northern california killings that until now had gone cold. investigators believe that 77-year-old joseph naso killed two uba county women in the 1990s, carmen colon, whose body was found in 1988, and roxene roggasch, who was found in a dumpster in 1977. he was arrested in reno, nevada, april 10, 2010. police officers arrested naso on a probation violation. but when they investigated his home, they found a whole lot more. during that arrest, investigators found items by mr. naso that implicated him in multiple murders of young women. reporter: that evidence included photographs and writings by naso that investigators say connected him to the women. it took them a year to piece it all together, but they re finally ready to throw the book at him. the allegation of that special circumstance makes naso eligible for the death penalty under california law. repor
mehdi-cal. so lucas remained hospitalized. just the fact that he was waking up in the morning, not to hear him, having him ask every day where his brother was ought. going home and trying to sleep without one of your kids, it s a nightmare. reporter: the family pled with leaders for help. today they officially received a waiver. the state picks up the tab and lucas gets to go home. it feels very good. i obviously i don t know the words to describe it. reporter: it was an uphill battle. thank you, bye-bye. thank you very much. reporter: now they re a family again, and baby lucas, he gets to sleep in his own bed. baby lucas is now considered institutionalized, meaning the state uses his salary to see if he qualified for coverage. obviously he does. he still has many more surgeries ahead. his father calls is a nightmare he hopes his son will never remember. damien, thank you very much. new tonight at 6:00, the younger brothers of nate scherr holtz pleaded no