Authorities have determined that the fatal shooting of four people inside a Northern California home, was a murder-suicide carried out by the male resident, according to officials. Sheriff’s officials said a neighbor first called 911, reporting what sounded like gunfire. A sheriff’s drone was flown inside and located Vallerga unresponsive, holding a pistol in his right hand, the department said. A second pistol was located beneath Vallerga’s body, and approximately 14 additional firearms were seized, according to the sheriff’s department. Advertisment1Based on the evidence, detectives concluded the case was a murder-suicide committed by Vallerga.