A Smashing Pumpkins concert in B.C. turned deadly Monday night after a 20-year-old man was found unconscious in a mosh pit.

Police say the Richmond man's death may have been related to crowd-surfing or moshing, but the B.C. coroner's office said it won't know for certain until Thursday.

"He was dragged over to security by a couple of unknown people," Vancouver police spokesperson Const. Howard Chow.

"Security realized right away that he was unconscious, they called over first aid right away and they tried to administer what they could," Chow told CTV British Columbia.

First aid staff at the PNE Forum in Vancouver worked on the man until he was taken to St. Paul's Hospital where he was later pronounced dead, said Chow.

Chow said there is no foul play or suspicious circumstances surrounding the death.

On Wednesday, concert promoters expressed condolences to the family of the man.

"We have heard preliminary reports that a patron had a medical emergency at the PNE Forum on Monday evening and was later pronounced dead at St. Paul's hospital,'' said John Vlautin, vice-president of communications for concert promotion company Livenation.

"We are currently awaiting an official report from local authorities. We extend our deepest condolences to the family and friends of the deceased."

The B.C. coroner's office is investigating the incident as a possible crowd-surfing or moshing death.

Crowd surfing is a practice where audience members are boosted up above the crowd and pushed along by other fans.

Moshing is an aggressive form of dance where fans, typically those closest to the stage, push or slam into each other, usually in time with the music.

Chow wouldn't confirm the cause of death, but said it could be linked to moshing or crowd-surfing at the concert. About 3,800 people were in attendance.

In 1996, a 17-year-old fan was killed in a mosh pit at a Smashing Pumpkins concert in Dublin.

The PNE has a three-strike policy on crowd surfing and fans that break the rule are kicked out. But staff admit it's a difficult rule to enforce.

"It wasn't what we would call a heavy moshing or crowd-surfing group but there certainly was some, and quite frankly you cannot prevent it. We do our very best to discourage it though," PNE spokesperson Laura Balance told CTV News.

However, she said officials would await results of the coroner's investigation before commenting further.

"In fairness to family and friends of this individual we just don't want to start speculating. It's just a really, really sad ending to what started out to be probably a very fun night for a young man," she told CP.

With a report from CTV British Columbia's Dave Lefebvre