A man told police he was punched by a passerby while walking on an Ypsilanti street in broad daylight Monday afternoon.

The man — who police would only describe as being a young adult — said he was walking down the sidewalk around 3 p.m. in the 1300 block of Roosevelt Street when he was assaulted "for no apparent reason," according to the Ypsilanti crime summary.

“He was walking on the sidewalk listening to his iPod and someone came up and punched him and walked away,” said Ypsilanti police Sgt. Dennis Szymankiewicz.

The man described the assailant as a man who fled on foot. Police said the victim waited more than two hours before reporting the incident. The investigation continues.

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John Counts covers cops and courts for AnnArbor.com. He can be reached at johncounts@annarbor.com or you can follow him on Twitter.