New York City police officers shot and killed a man they say was threatening them with a knife Saturday, as a witness caught the last few seconds of the chase.

The video, posted by WNBC-TV Saturday afternoon, was shot by a witness following the foot chase between officers and the unidentified man along 7th Avenue from across the street. About 17 seconds into the clip, about 10 gunshots can be heard.

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“I was standing at the corner of 42nd Street and saw this guy running in middle of street, police chasing him,” one resident said. “He had a machete type knife. He didn’t want to stop. Police told him to drop the knife. He didn’t. They shot him.”

Authorities say they saw the man, who was not carrying a wallet, smoking marijuana before approaching him. He subsequently became belligerent and threatened them.

One witness told The New York Post that police began chasing the victim, an African-American, after trying to flash them after coming out of a nearby subway tunnel. He had already flashed two other people, the witness said.

The Post reported that the man did not go down after being pepper-sprayed before being shot. He was taken to Bellevue Hospital while suffering cardiac arrest, where he died.

The video, posted by WNBC on Saturday, can be seen below:

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View more videos at: http://nbcnewyork.com.