Cancer patient opens fire inside NYC's Sloan Kettering hospital, arrested

The shooting sparked a massive police response, with the NYPD’s hostage negotiation and emergency service units on hand

A cancer patient opened fire inside a Manhattan hospital on Thursday night before barricading himself in a bathroom for several hours, sources and police said.

The 65-year-old man fired five or six shots inside Memorial Sloan Kettering’s urgent care facility on East 67th Street at about 8:45 p.m., law enforcement sources said.

The man, who was released from the hospital Thursday, was taken into custody just before midnight, police said.

No injuries were immediately reported, police said.

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The shooting sparked a massive police response, with the NYPD’s hostage negotiation and emergency service units on hand.

It was not immediately clear if the man held any hostages during the standoff.

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The department’s 19th Precinct had urged the public to avoid the area.

"There is an active police investigation occurring inside Sloan Kettering Hospital located at 425 E 67 Street," the precinct tweeted.

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"Please avoid the area & expect a large police presence."

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