As many as 100 teenagers required medical treatment and a man who landed a helicopter near the crowd was arrested as a rave event at the Nassau Veterans Memorial Coliseum descended into chaos.
The event, called Haunted Coliseum, was billed as an electronic dance music event.
It was supposed to feature Sebastian Ingrosso, Alesso and Otto Knows. It was shut down after only about an hour.
Nassau County police say they received several 911 calls for intoxicated youths at the event. While detectives and officers were at the scene investigating as many as 100 intoxicated youths between the ages of 14 and 18, a man attempted to land a Bell helicopter on a grassy area on the west side of the coliseum.
Police say the landing had to be aborted due to people walking in the area. They say the pilot, Michael Croissant, 44, then returned and landed on the grassy area, despite at least 20 people being in the area.
Police arrested Croissant and seized his helicopter.
The intoxicated youths were transported to several Nassau County hospitals by Nassau County Fire Department and private ambulances. Police said there were no reports of fatalities but the conditions of the victims was unknown.
The event's Facebook page was flooded with angry comments from people who complained of disorganization. Many posts were from people demanding refunds.