RUNNING SPRINGS, Calif. (KABC) -- Over a dozen people, mostly juveniles, were hurt after a bus overturned on the highway in Running Springs.

In total, 20 people were transported to the hospital with injuries, according to the San Bernardino County Fire Department. Three of the patients had severe injuries, and the rest were minor injuries.

It's believed that about 36 adults and teens were on the bus.

The crash happened on Highway 330 just before 9 p.m. on Sunday. The highway was closed in both directions as crews investigated the scene.

It's unknown when the highway will reopen. It's also not clear where the bus was headed or what happened to cause it to overturn.

This is a developing story. More information will be added to this page when additional details become available.

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