DeAngelo was previously charged in 12 killings throughout the state in the 1970s and 1980s that authorities say were committed by one of the state's most elusive serial killers.
Tulare County district attorney Tim Ward believes Snelling was the first victim murdered by Joseph DeAngelo, the suspected Golden State Killer.
Elizabeth Hupp told CBS This Morning about the night her father Claude Snelling was murdered.
"That's when I heard my dad yell and... the man with a ski mask pushed me to the ground, turned, and shot my dad twice as he was coming through the back door", Hupp said in the interview.
Snelling died on the way to the hospital.
"He's always been my hero", Hupp said, adding, "I would not be here today, I'm sure of it, if it hadn't been for him".
"Numerous other crimes, including burglary and attempted murder of a peace officer allegedly committed by DeAngelo during the 1970s in Tulare County, can not be filed due to the statute of limitations", prosecutors said.
Visalia Police Department and Tulare County District Attorney's Office announced a first-degree murder charge against Joseph James DeAngelo, the 72-year-old former cop who was arrested in April after his DNA was linked to those found in several murder scenes in California.
Decades after the killings terrified communities throughout California, authorities tracked down DeAngelo using data from an ancestry website where people submit their DNA results in hopes of tracking down relatives and ancestors.
"We're filing first degree murder charges against Mr. DeAngelo, along with an allegation that he used a firearm in the commission of that murder", Ward said.
Authorities said DeAngelo was working as a police officer in the city of Exeter from May 1973 to August 1976, the period in which the Ransacker cases were occurring in Visalia and at the time of the Snelling homicide. He is also suspected in about 100 burglaries and attempted sex assaults in Visalia.
DeAngelo is now being held in Sacramento County Main Jail and faces 12 counts of murder in Sacramento, Orange, Ventura and Santa Barbara counties. "He's a very evil person". He managed to escape after firing a gun at a detective who tried to arrest him. The Visalia slayings ended a few months before the East Area Rapist crimes began.