SAN JOSE -- The shooter and victim in a Valentine's Day murder-suicide spurred by a relationship turned sour were identified Tuesday as Anh V. Pham, 29, and Anh Tran, 22, who both lived at the Bermuda Way home where the killings occurred.

Police didn't have additional details on what spurred Pham to kill his one-time girlfriend before taking his own life and said they may never find out.

"We know that they were once romantically involved but had recently split," said San Jose police spokesman Sgt. Jason Dwyer. "They are the only people who know exactly what happened."

Police were called to the scene at a large two-story home on the 1800 block of Bermuda, across the street from William C. Overfelt High School, about 4:20 p.m. Thursday. A roommate had heard gunfire and found the bodies of Pham and Tran in an upstairs bedroom. They were pronounced dead at the scene.

Dwyer said both lived at the home, although in separate rooms. They had been in a romantic relationship until about a month before the shooting.

The slaying marked the sixth homicide of the year in San Jose and happened a day after a teenager was stabbed to death by at least two men near San Jose High School in an attack police believe was gang-related.

Contact Eric Kurhi at 408-920-5852. Follow him at Twitter.com/erickurhi.