A 59-year-old man told police that an acquaintance pulled a gun on him and took his money in an Ann Arbor alley Tuesday night.

At 9:26 p.m., police were called to an alleyway in the 200 block of West Liberty Street, where the man told officers that a 30-year-old Ann Arbor man who is known to him robbed him at gunpoint, said Lt. Renee Bush.

The 59-year-old man told police he was walking in the alley when the suspect came up from behind him, stopped him and pulled what the man believed was a gun from his waistband, according to police.

“He told the victim to give him his money,” Bush said.

The 59-year-old handed over a small amount of cash and coins, and the suspect fled.

Police are looking for the suspect for questioning. He was described as a tall, thin black man around 30 years old with an Afro hair style. He was clean shaven, 6 foot 1 inch tall and weighed about 165 pounds. He was wearing a baseball cap and dark sweatshirt.

The incident remains under investigation.

Anyone with information about this incident is encouraged to call the Ann Arbor police anonymous tip line at 734-794-6939 or Crime Stoppers at 1-800-SPEAK UP (773-2587).

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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.