SAN DIEGO (CBS 8) - At least one person was in custody after a brawl broke out on the Viejas Indian Reservation Wednesday morning that left several people injured.

The fracas on the Alpine-area tribal grounds erupted for unknown reasons about 9:30 a.m., according to sheriff's officials.

The fight, which reportedly involved at least 10 men and women, moved across several locations around Woods Lane and Viejas Grade, Lt. Dave Brown said.

Deputies and detectives intervened and had the disturbance under control by 10 a.m., the lieutenant said.

The fight reportedly involved bats and other weapons, according to a Chopper 8 report. At least four people were injured.

The incident was under investigation.