Investigators determined that a vegetation fire that burned 490 acres south of Lompoc was caused by four juveniles playing with fire. The fire began 8/20 and was not intentional, said county Fire Department spokesperson Capt. Eli Iskow. When juveniles of that age are involved, the “investigator’s focus is not on prosecution but on curbing future behavior by educating children and their parents on fire safety and the consequences of playing with fire,” Iskow said.