Police explained that the man was removed unconscious from the crowd inside the PNE Forum venue.
First aid specialists attempted to revive him before he was transferred to the nearby St. Paul's Hosptial, where he was pronounced dead.
Police explained that they did not suspect any foul play and the circumstances were "not suspicious," claiming that the death was due to an "out of control mosh pit."
A spokeswoman for the venue said: "It's just a really, really sad ending to what started out to be probably a very fun night for a young man."
For more on Smashing Pumpkins, check out their NME.com page.
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