WASHINGTON HEIGHTS, Manhattan (PIX11) — The suspect who rode off on a moped after an off-duty NYPD officer shot and killed an armed man in Manhattan Sunday night is an illegal immigrant, according to sources.

The shooting occurred just before 10 p.m. Sunday when the off-duty officer was approached by two men riding mopeds while standing outside of a residential building.

One of the men, 30, got off the motorbike, pulled out a .9mm gun and asked if the officer knew someone by a particular name, according to police. The officer then pulled his gun and shot the 30-year-old in the chest.

The second man, dressed in all black, drove off on his moped heading south on Amsterdam Avenue. He is believed to be an illegal immigrant, according to sources.

Sources said the duo mugged people minutes b

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