ANN ARBOR, MI - Police are investigating two armed robberies where the suspect was wearing a clown mask late Tuesday, Oct. 4 in Ann Arbor.

At 10:30 p.m. Tuesday, Ann Arbor Police responded to the BP Gas Station, 3720 Washtenaw Avenue in Ann Arbor, for a report of an armed robbery, said Ann Arbor police Detective Lt. Matthew Lige.

The suspect entered the gas station, produced a handgun, demanded money, then fled with an unknown amount of cash.

Then, at 11 p.m. at the Domino's Pizza, 2601 Plymouth Road in Ann Arbor, a suspect dressed in the same attire robbed the restaurant at gunpoint. The individual fled with cash in an unknown direction.

No shots were fired and no one was injured in either incident, Lige said.

Based on the timeline, similar descriptions of the suspects and the locations, it could be the same person, he said.

Police are waiting to get surveillance video from Domino's.

The robberies could be related to a similar robbery in at 9:30 p.m. Tuesday in Brownstown Township, Lige said.

Also on Tuesday, a man dressed as a clown injured a boy with a knife in Sterling Heights.

More than 20 cities across Michigan and 20 states in the nation, people have reported people dressed as clowns committing crimes in the last two months.