Emergency crews are at the scene of an explosion and fire at a factory in Elk County.

We’re told at least one explosion sparked a fire at the Advanced Heat Treating Factory along Trout Run Rd. in Saint Marys around 11:22 p.m.

According to dispatch, at least one person with unknown injuries was taken to the hospital in a private vehicle.

We’re told that fire was under control by 12:15 a.m.