A man who police said opened fire on a crowd at an Isley Brothers concert in Los Angeles late Friday night was shot to death by a police officer on the scene, authorities said. Three others suffered gunshot wounds in the incident that happened just before 11 p.m. at Los Angeles Sports Arena, but police spokesperson Jason Lee could not confirm whether they had been shot by the suspect or the officer. The names of the victims and the officer have not been released. Lee said an on-duty officer assigned to the arena witnessed a man firing his gun in the direction of the crowd inside the venue, where the Isley Brothers were onstage. The officer identified himself and fired at the suspect, who turned and pointed his gun at the officer, according to the spokesperson. "In fear for his own life, the officer returned fire," Lee said, reading from a police statement. The suspect was pronounced dead at the scene. Two of the surviving victims were treated and released, while the third remains in a hospital in serious condition. The Isley Brothers, whose hits include "It's Your Thing" and "That Lady," are scheduled to perform at the Chicago Theatre in Chicago on Saturday night.