OKLAHOMA CITY -- Police and fire crews responded to a possible arson fire at a daycare center early Thursday morning.
About 3 a.m. crews arrived to heavy flames at the Childtime Daycare Center on S.W. 89th St. and May Ave.
Firefighters said three daycare buses were engulfed in flames.
Crews knocked down the fires.
Fire investigators said it appears at least one of the fires may have been intentionally set.
Flames spread from vehicle to vehicle.
No one was in the facility when the fire started.
The cause is under investigation.