(Updated at 4:45 p.m.) Arlington County Police are on the scene of a bank robbery in Clarendon.

The robbery occurred just before 3:45 p.m. Initial reports suggest the suspect made off with about $5,000 in cash from the TD Bank at 3101 Wilson Blvd, across from the Clarendon Metro station.

The suspect obtained the cash after passing a note to the teller implying that he had a gun, according to ACPD spokesman Lt. Mike Watson.

Police are looking for the suspect, now described as a 6-foot tall black male with an average build, wearing a a red, green and yellow Jamaican-style hat. One witness reported seeing the suspect get on a westbound ART bus to flee the scene.

Several ART buses were searched immediately following the robbery, but as of 4:30 p.m. the suspect was still at large. The FBI is en route to assist with the investigation, Watson said.