ANN ARBOR, Mich. -
The robberies happened between 1 a.m. and 3 a.m. in the 900 block of West Washington, 1100 block of South Forest and near Cambridge Road and Olivia Avenue.
In all cases, police said a man approached victims brandishing a black handgun, taking wallets, phones and cash.
No one was hurt.
The description released by police of the robber is: A black man in his mid-20s, 5 feet 6 inches to 5 feet 8 inches tall. He was wearing a black hooded sweatshirt and black ski mask.
The University of Michigan Department of Public Safety at 734-763-1131.
The Ann Arbor Police Department tip line is 734-794-6939.
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