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The victims include a 3-year-old boy, who was stabbed in the arm.
The attack - which occurred shortly before 8 a.m. along a bike path near West 63rd Street in Riverside Park - appears to be random, and police took the suspect into custody, according to Gothamist.
A construction worker at the scene said he witnessed a homeless man taking a pair of scissors apart and
One female victim is in serious condition. Victims were transported to local hospitals after the attack.