An investigation is under way involving a shooting that claimed the life of a 14-year-old girl and left a 12-year-old girl and 21-year-old man wounded in the unincorporated Westmont area adjoining South Los Angeles.

The shooting at 97th Street and Normandie Avenue was reported around 11:15 p.m. Wednesday, said Sgt. R. Conley of the Los Angeles County Sheriff’s Department’s South Los Angeles Station.

The three victims were transported to hospitals, where the 14-year-old girl–identified as Unique Russell–died. The survivors were hospitalized, but condition reports were unavailable.

The victims were among a group of people gathered in front of a residence when the suspects — described only as males–approached them and opened fire, the Sheriff’s Department reported. A motive for the Fourth of July shooting was unknown.

Anyone with information on the case was urged to call the Sheriff’s Homicide Bureau at (323) 890-5500 or Crime Stoppers at (800) 222-TIPS.