NEW YORK (CBSNewYork) – The NYPD wants your help finding some fake cops.

They say there have been two separate robberies in Brooklyn and the Bronx.

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The Brooklyn robbery took place on July 24 at 7:15 p.m. and was caught on surveillance video.

(credit: NYPD)

Police say that in that incident, a 58-year-old man was walking near 63rd Street and 18th Avenue in Brooklyn when he was approached by another man wearing a gold police shield.

The suspect then ordered the victim to put his hands against the wall before tying him up with zip-ties.

The suspect then rifled through the victim’s pockets before taking off in a gray Nissan Murano, police said.

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Police say that the victim was uninjured and the suspect didn’t get away with any property.

The Bronx incident took place on Aug. 12 at around 2 a.m. near Pugsley and Gildersleeve Avenues.

Police impersonation suspects in the Bronx. (credit: NYPD)

Police say that two men walked up to a 28-year-old and said “Police, keep your head down,” before one of them pulled out a shield and a pistol. One suspect shoved the gun into the victim’s back and the two then stole his cell phone and $20.

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 the Crime Stoppers website or text your tip to 27637 (CRIMES) and then enter TIP577.

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All calls are kept confidential.