Updated 4:21PM ET
SAN DIEGO - A New Year's Day shooting that left four dead at a condominium near San Diego was a murder-suicide involving a 25-year-old Navy pilot who killed himself, officials said Wednesday.
Autopsy results show John Robert Reeves shot himself in the head, and the three others with him were murdered, the San Diego County Sheriff's Department said.
A fellow Navy pilot, 25-year-old David Reis, was killed by a gunshot wound to the torso and his 24-year-old sister, Karen, suffered a gunshot wound to the head and chest, officials said. A 31-year-old Chula Vista man, Matthew Saturley, was shot multiple times.
No details on the motive of the killings were released. Officials previously said that one of the men was found dead in the doorway of the three-story condo and the bodies of two men and a woman were inside the home.
The deaths shook Coronado, a picturesque peninsular enclave of 24,000 people on San Diego Bay that draws tourists and recorded only one homicide in 2010. The city is home to Naval Air Station North Island, serves as a training area for Navy SEALs, and is a haven for Navy retirees.
"It's still a shocker,", 26, who played college volleyball with Karen Reis and later coached with her at a high school and club program. "This kind of thing doesn't happen to people like her and David. Their family is the family everybody wants to be a part of. They're just so loving, and there's so much love in their family."
The Marine Corps says Reeves, of Prince Frederick, Md., and Reis, of Bakersfield, Calif. were both Navy officers and F/A-18 fighter pilots. They were assigned to the Marine Fighter Attack Training Squadron 101 of the Third Marine Aircraft Wing at Miramar Air Station.
Both men joined the Navy through ROTC in 2008 at separate universities. Reeves commissioned in the Navy through ROTC at Penn State University while Reis commissioned in the Navy through ROTC at the University of New Mexico, where he graduated with a degree in mechanical engineering.
Lt. Col. Robert Brodie expressed his support for the families of both men and urged people to pray for them.
"Our condolences go out to the families, friends, fellow service members and Coronado community during this time of mourning," Brodie said.
Neighbor Don Hubbard, a retired Navy commander, said the Navy pilots lived together. Hubbard was awakened by shots that he thought were fired by New Year's revelers. He went back to sleep, but two hours later got a phone call and heard SWAT teams swarming the area.