D.C. police and the FBI are looking for four men who took bags of checks from a courier's vehicle that was parked outside of a Northwest D.C. bank.

The incident took place about 5:30 p.m. on March 14 near the SunTrust bank at 6422 Georgia Ave. NW. As the courier entered the bank, the men stole multiple bags from the employee's vehicle. They then fled on foot, according to the FBI.

The men were seen in street-level surveillance footage, though the pictures do not show clear images of the culprits' faces. Three of the men are described as wearing black hooded jackets. The fourth man was seen wearing a gray hooded sweatshirt with black sleeves and black pants.

Authorities also believe that two of the culprits in the March incident tried to rob a courier outside the same SunTrust branch on Feb. 26. In that incident, the men approached a courier who was walking up to the bank but the courier was able to get away, according to FBI spokeswoman Lindsay Godwin.

Couriers pick up checks from a number of bank branches and deposit them in a central location. Godwin said it is "not very often" that a courier is robbed.

The checks in the March 14 robbery have not been recovered. However, Godwin said the robbers would not have been able to cash the checks because they would have already been processed before the courier received them.

Anyone with information about the case can call D.C. police at 202-727-9099 or the FBI at 202-278-2000.