The NYPD told Fox News Digital that the 44-year-old man had found a plastic bag filled with weapons while fishing.
The fisher alerted the NYPD, who promptly deployed Emergency Response Detectives Unit divers to recover the guns.
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The weapons were found after divers from the NYPD Special Operations team located them in Jamaica Bay. (New York Police Department)
The NYPD described the fisherman as a "concerned New Yorker."
Officials found three AR-15 rifles in a black plastic bag. A few hours later, they retrieved 14 handguns.
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NYPD officials Officials found three AR-15 rifles in a black plastic bag, in addition to 14 handguns. (New York Police Department)
The NYPD is investigating the incident. There is no information about where the weapons came from or who dumped them.
Anyone with information about the incident is asked to contact Crime Stoppers at 1-800-577-TIPS.