VANCOUVER - An autopsy turned up no obvious answers to the question of how a young man died at a Vancouver concert this week.

The 20-year-old was dragged unconscious from the crowd at a Smashing Pumpkins' show at the PNE Forum on Monday.

Vancouver regional coroner Owen Court says an autopsy this morning failed to show any trauma or injury to the young man that could have killed him.

There have been conflicting reports from the concert about whether or not the man had been moshing and crowd-surfing the minutes before he died.

Court says there were also no physical signs of drug or alcohol use or a pre-existing disease.

Toxicology tests will be the next step to determine the man's cause of death and those results aren't expected for at least three weeks.