Two people were killed, and at least nine others injured, in a gory stretch of violence across New York City on Wednesday night, police and sources said.

The bloodshed included 7 gunshot victims, including an 8-year-old boy, two people who were stabbed and two more who were slashed across Brooklyn, Queens and Manhattan, according to police and sources.

One of the fatal victims was a 27-year-old woman who was fatally stabbed by her ex-boyfriend in her Harlem apartment at about 8:45 p.m., according to police.

Amid the struggle, the woman was also able to stab her attacker, once in his neck and another time to his chest, according to police and sources. He was left in critical condition.

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