Authorities are seeking the public's help in identifying a suspect accused of an armed robbery Thursday in Colesville.

Montgomery County Police say they received a report of a robbery at a Citibank (13440 New Hampshire Ave.) around 8:33 p.m.

A 48-year-old man at the scene told officers that he had been using an ATM in the bank's vestibule with his four-year-old daughter when a man approached him from behind, police said.

The suspect forced a gun into the victim's back and demanded that he take out cash from the ATM, according to police. After the victim complied, the gunman allegedly fled on foot towards Randolph Road.

The suspect is described as a black male with a thin build and facial hair. He was said to be wearing a light blue sweatshirt with a hood, dark pants, and a black knit hat at the time of the robbery. (View photos of the suspect in the gallery at right.)

Anyone with information about the this incident is asked to contact the 4th District Investigative Section at 240-773-5530.  

Those wishing to remain anonymous can call Crime Solvers of Montgomery County at 1-866-411-TIPS (8477). A reward of up to $1,000 is being offered for any tip that leads to an arrest and/or indictment in the case.