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COLLEGE PARK, Md. (WUSA) -- The University of Maryland Police is investigating an assault that took place on a shuttle bus.

According to the Criminal Investigations Unit, the suspect pictured above punched a female passenger in the face without provocation on Saturday at about 1 a.m.

If you have any information about the suspect call the University of Maryland Police at 301-405-3555 or email investigations@umpd.umd.edu or anonymously at www.umpd.umd.edu.