Three youngsters were injured Saturday afternoon when their all-terrain vehicle ran off Oak Grove Drive near Descanso.
Sgt. Roy Stamper of the San Diego Sheriff’s Department said a 13-year-old boy and two younger girls were riding on the three-wheeled cycle when they ran off the road about 3 p.m.
Stamper said the boy was in serious condition and the older of the two girls was in grave condition at Children’s Hospital & Health Center. The younger girl was in good condition at Sharp Memorial Hospital.