Authorities arrested a Shaler Township man wanted in connection with a 1980 homicide in Santa Monica, California.
Santa Monica and Shaler Township police arrested 53-year-old Patrick Salmon at his home on May 17.
Authorities said Salmon was involved with the killing of 16-year-old Joaquin Mansion who was shot to death during a home invasion on May 21, 1980 in Santa Monica.
Investigators said two juvenile co-conspirators were located, arrested and convicted with the crime but the adult gunman, who police believe to be Salmon, was never identified.
The investigation was suspended for nearly three decades until Santa Monica’s Cold Case unit reopened it.
Authorities said substantial improvement in electronic law enforcement provided valuable leads in the case that was unavailable in 1980.
Detectives said the new information lead to leads in Illinois, South Dakota and Pennsylvania which ultimately pointed them towards Salmon.
The Los Angeles District Attorney’s Office joined forces with law enforcement in Pittsburgh to conclude the investigation two weeks ago.
Salmon was taken into custody and is currently being held in the Allegheny County Jail awaiting extradition.