A volunteer football coach at Franklin High School in Highland Park was arrested on suspicion of sexually assaulting current and former students, police said.
Jaime Jimenez, 46, was arrested Thursday.
Jimenez coached football from 1998 until his arrest.
Drake Madison, a Los Angeles Police Department spokesman, said the department was withholding the number of alleged victims established so far.
Jimenez was being held at Men's Central Jail in lieu of $450,000 bail.
Anyone with information related to this case is asked to contact Northeast Division detectives at (323) 344-5742.