Dozens of teenage ravers were hospitalized tonight during a show at the TD Garden featuring a Swedish DJ, authorities said.

Many of those attending the electronic dance music show with DJ Avicii arrived already intoxicated, said Boston EMS Deputy Superintendent Mike Bosse.

EMS and private ambulances transported 36 people to the hospital, and 50 more people were being treated for various conditions at the Garden, Bosse said. None of the people were suffering life-threatening symptoms, Bosse said. He said the ages of those hospitalized ranged from 16 to 25.

Tricia McCorkle, director of communications at TD Garden, said there were a "number of transports due to medical issues."

Boston Police superintendent in chief William Gross said cops are investigating the incident, which he said is all too common at techno shows.