April 19 (UPI) -- Investigators say they've cracked a pair of 40-year-old California murder cases by using DNA testing to identify the killer -- a method similar to that used by authorities last year to identify who they say is the Golden State Killer.
Officials said DNA taken from prison inmate Arthur Rudy Martinez conclusively matches DNA left at the scene of two homicides in San Luis Obispo County in 1977 and 1978. Both victims -- Jane Morton and Patricia Dwyer -- had also been sexually assaulted. Police say Morton was killed in her car and Dwyer was stabbed to death in her home.