BROOKLYN - Police are asking for help finding a man who they say has robbed several people in Canarsie. 

According to investigators, there have been three separate robbery reports since February, with each incident happening near the Bay View Houses and on the same block as a school and playground. 

The last reported case was on March 13, when the suspect allegedly pulled a knife on a 17-year-old. Authorities say all of the victims are teenagers. 

Cops released a surveillance image of the suspect, and ask anyone who recognizes him to come forward.