A Hayward man was fatally wounded by gunfire that erupted about 2 a.m. Sunday during a party at a home in the 700 block of Frewert Road in Lathrop.

The San Joaquin County Sheriff's Department reported that deputies arrived at the scene to find Luis Angel Barraza, 19, suffering from gunshot wounds to his upper body. Barraza was taken to a hospital, where he was pronounced dead.

Deputy Les Garcia, spokesman for the Sheriff's Office, said detectives have little information on the shooting and still are trying to determine what prompted it and who is responsible.