4 shot outside LA party held after Justin Bieber's concert

Four people were shot and wounded early Saturday after a fight broke out outside a Los Angeles restaurant hosting a party that followed a Justin Bieber concert, police said.

The gunfire erupted outside The Nice Guy restaurant, striking and injuring four men ages 60, 22, 20 and 19, LAPD Officer Lizeth Lomeli said. Their names were not released.

Officers who responded to the scene found two victims. Paramedics took them to the hospital for treatment of non-life-threatening injuries, police said in an updated statement Saturday afternoon.

Two additional victims went to hospitals on their own, according to the statement. All four victims were listed in stable condition.

Detectives asked witnesses to come forward to help them identify the gunman.