Transit police are asking the public’s help in identifying three men they say verbally abused an MBTA passenger before physically assaulting him on the Orange Line northbound platform at State Street Station on Dec. 13.

The suspects are seen smiling in what appears to be a cell phone photograph. They are described as white males between the ages of 20 and 25. Anyone with information can call transit police at 617-222-1050, or text an anonymous tip to 873873.