DETROIT (WWJ) – A video a clown hitching a right on the back of a Detroit Department of Transportation bus is going viral.

The video was taken Saturday by someone riding alongside the bus. It shows a daredevil clown in a white hospital gown and menacing mask with bright pink hair clinging onto the back of the bus.

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“This n**** hanging on the back of the bus,” a man says as the vehicles speeds up to the bus. “It’s a f****** clown! Get the f*** out of here!”

Click here to see the video (WARNING: Explicit language)

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It’s not clear where the video was taken, but the bus goes over train tracks as the clown holds on for dear life. It’s been viewed more than a million times.

The clown’s identity is still a mystery at this point, but DDOT isn’t amused by the stunt. In a statement, DDOT says it has surveillance cameras both inside and outside its buses — and they’ve forwarded the footage to police for review. Officials say the safety of all riders, even clowns, is their number one priority.

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An investigation is ongoing.