A lone, knife-wilding assailant killed two men and critically wounded a woman during an hours-long stabbing spree Monday morning through the streets of New York City, authorities said.

Three people were stabbed in Manhattan Monday morning, two fatally, in what appears to be an unprovoked spree by a lone attacker, police said. The first victim, a 30-year-old construction worker, was stabbed about 8:20 a.