Phoenix police are investigating a fatal utility terrain vehicle crash that killed the two teenage girls riding in it.

Sgt. Brian Bower said the collision occurred Thursday afternoon in a northern Phoenix desert area.

Officers who arrived at the scene said they found the UTV completely turned upside down. Phoenix firefighters also at the scene pronounced the two teens dead.

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Phoenix police investigate a UTV crash resulting in the loss of two teenage lives. (Fox News)

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There were no other passengers. Authorities have not released the identities of the two girls.

Riding a UTV on trails either privately or with a tour company is a typical recreational activity in the Phoenix area.