BROOKLYN - Police are asking for help catching three men behind a rash of robberies in Brooklyn.

Investigators released surveillance video captured at a Western Union on Flatlands Avenue in East Flatbush, which is the site of the most recent robbery out of four dating back to the beginning of October.

On each occasion, the suspects allegedly show a weapon, steal money and personal property, and flee the scene on foot.

Cops say that a Western Union on Nostrand Avenue was hit twice on Oct. 10 and Nov. 2, and a Caribbean AirMail on Flatbush Avenue was targeted on Oct. 18. The other Western Union was robbed on Nov. 7.

Anyone with information is urged to contact police.