Pre-Frankenstorm revelry got out of hand at the Nassau Coliseum's "Haunted Coliseum" show last night when 50 people became ill. The show, which featured electronic dance music from Sebastian Ingrosso, Otto Knows, and DJ Alesso, had a "rave atmosphere," according to Newsday. Nassau County police Inspector Kenneth Lack said, “We started getting calls for multiple aided cases for highly intoxicated individuals whether it be on alcohol or controlled substances. As soon as it reached a level where it became apparent that something was going desperately wrong, we made the decision to close it down for the good of public safety.”

The Post's sources say that "Responders found dozens of young people passing out and throwing up." Newsday reports:

After Otto Knows and 20 minutes into DJ Alesso’s set, the lights came up, the music shut down and people were told to hit the exits at 11:15 p.m. This was just over an hour past the 10 p.m. start and before Sebastian Ingrosso of Swedish House Mafia ever took the stage. The crowd chanted, "This is bull----!" as if the Islanders got a bad call from a ref but then followed instructions to evacuate the building.

Newsday adds, "Molly and ecstasy were two drugs that witnesses noticed being used as well as alcohol disguised in bottles of Gatorade." Here are videos from inside—warning, you might have a stroke:

One 32-year-old Long Island resident said, "This is what disco was like back in the ‘70s. It’s a drug-fueled music scene. Today's culture is turned onto this sort of thing. The bigger the music gets, the more insane the whole drug scene becomes," while others complained that there should have been at least an 18-and-over policy.