At least 13 people were reportedly injured after a black sedan slammed into a passenger Saturday on an interstate in Las Vegas.

Las Vegas police said a black Toyota sedan and a helicopter tour bus collided on the northbound side of Interstate-15 at around 7:45 p.m. Nine of the victims were on the bus and four were in the Toyota, according to KLAS-TV.

The driver of the sedan was undergoing a sobriety test, police said.

Las Vegas Fire and Rescue said several units were on the scene providing assistance to those who were injured in the accident, according to KVVU-TV.

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