(Photo: Ron Castellano)

The aftermath of the stabbing. (Photo: Ron Castellano)

A teenager was stabbed last night after a mob ganged up on him on the Lower East Side.

Ron Castellano, a resident, said that around 11:10 p.m. he heard yelling outside of his workplace, coming from the intersection of East Broadway and Essex. “I opened up the door and looked out and it was like 30 to 50 people in a swarm – like a tornado going through the street.”

The group — “like a swarm of bees” — was so disorderly that a bouncer at 169 Bar took cover inside of the dive. “They were grabbing everything and throwing it – trash cans, bags, a stool that the guy at 169 Bar was sitting on. One guy had a pointy, straight-edge metal rake and was swinging it. They were ganging up on one guy on the ground — he actually got stabbed.”

The fire department told DNA Info that a 17-year-old was knifed in his left side during the incident and was rushed to Bellevue in serious but stable condition. A police source told the outlet that a 15-year-old was arrested and charged with assault as a juvenile.

Castellano told us members of the group disappeared into the subway as quickly as they had come. “It was pretty intense – I’ve never seen anything like it that happened that fast and was that crazy,” he said.