SCOTTSDALE, Ariz. (AP) - Police have arrested a naked carjacking suspect who allegedly caused two separate car collisions that injured seven people in Scottsdale.

Authorities say the man was taken to a hospital Friday afternoon to be evaluated for drug use or any mental issues.

His name wasn't immediately released. Police say he could face carjacking and felony hit-and-run charges.

Witnesses say the man exited a vehicle after the first crash, took off his clothes and carjacked another vehicle.

Police say four people were injured in the second crash including a pregnant woman who broke both her legs.

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