This post has been corrected. See below for details.

A gunman opened fire on a BMW near the USC campus Wednesday, killing two international students from China in a bungled robbery attempt, police said.

One of the victims, a man in his 20s, attempted to run for help after being shot but never made it. He was found collapsed on a porch, police said. The other victim, a woman in her 20s, was found slumped over in the BMW parked in the 2700 block of Raymond Avenue, a few blocks from USC.

[For the Record, 8:20 a.m. April 12: An earlier version of this post incorrectly referred to South Raymond Avenue. The correct address is the 2700 block of Raymond Avenue just south of Adams Boulevard.]

Police said both were graduate students from China studying electrical engineering, and Los Angeles authorities were working with school officials and the Chinese consulate to notify their families.

A lone assailant is believed responsible for the slayings, said Cmdr. Andrew Smith of the Los Angeles Police Department. He said detectives had little to go on and were examining all possibilities.

“We’re just hoping we get a tip from someone in the area,” he said.

Homicide detectives were going door to door Wednesday, talking with neighbors in the 2700 block of South Raymond Avenue.