Police shot and killed an allegedly armed man in a confrontation on the Upper East Side Thursday night, according to law enforcement sources and authorities.

Cops received a 911 call just after 7 p.m. about a man who was spotted waving a gun at people near East 107th Street and Madison Avenue in Manhattan, according to sources and the NYPD.

A gun is seen at the bloody crime scene on the Upper East Side where police fatally shot an armed man. Christopher Sadowski

Cops received a 911 call just after 7 p.m. about a man who was spotted waving a gun at people near East 107th Street and Madison Avenue in Manhattan, according to sources and the NYPD. Christopher Sadowski

Less than 20 minutes later, cops discovered the reported gun-touting assailant a few blocks down by East 96th Street, pol

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