Police need the public's help in tracking down a man who is accused of robbing more than a dozen people in the past month.

They say 13 people have been attacked and robbed between Jan. 3 and this past Tuesday.

The majority of the suspect’s crimes were committed across North Brooklyn, in East New York and in Bushwick. Police say there were also other robberies in Queens.

The suspect, who has been caught on surveillance video from one of the incidents in Queens, targets women and the elderly.

At first, police say he uses his fists to punch the victims, but more recently he allegedly has threatened victims with a knife.

None of the victims in any of the cases have been seriously injured.

Anyone with information is asked to call Crime Stoppers at 1-800-577-TIPS.