The officer was attacked early Sunday inside a parking garage in The Bronx.
Police say the officer was arguing with a group of men when they began beating him, then took off with his gun.
Police say it happened just before 3 a.m. on Carter Avenue in the Mount Hope section.
The victim was taken to the hospital with minor injuries.
A 25-year-old man and a 27-year-old man both have been charged with robbery, criminal possession of a weapon and assault.
Police continue to search for the third suspect.
(The Associated Press contributed to this report.)
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