investigators say four children were playing in and around a parked minivan saturday evening at the arcadia palms on east sahara avenue when one of them unintentionally set a fire inside .
two young children have died after a minivan they were playing in on the parking lot of the arcadia palms apartment complex in las vegas caught fire and exploded -lrb- police scene -rrb- .
police say it appears the 6 pm fire was unintentional and accidental , and no criminal charges are expected because of the age of the child who started the fire .