By CBSNewYork Team

NEW YORK (CBSNewYork) – The NYPD wants your help identifying at least two people who they say are mugging people on the Upper West Side.

They say there have been at least five incidents.

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In one case on March 13, police say the suspects followed a 13-year-old into the lobby of a building on Amsterdam Avenue on West 77th Street and attacked him, stealing his hat.

They say the same suspects pulled a knife on someone in Central Park March 17th at 3:25 p.m. near West 79th Street. They took off on Citi Bikes.

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They are also being eyed in the mugging of two 14-year-olds and a 15-year-old on Riverside Drive on March 30 at 9 p.m. In that incident, police say they displayed a firearm in their waistband. They allegedly stole an electric scooter from a nearby building’s lobby the same day.

The most recent incident took place March 31 at around 12:30 a.m. They threatened to stab a man a stole his cell phone and wallet on West 69th Street, according to police.

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Anyone with any information is asked to call the NYPD’s Crime Stoppers hotline at 1-800-577-TIPS (8477), or for Spanish, 1-888-57-PISTA (74782). You can also submit a tip via their website or via DM on Twitter, @NYPDTips. All calls are kept confidential.

CBSNewYork Team