The fan, named locally as Ali Mills from Chestnut in Essex, died at Alexandra Palace in London on Friday night.
The five-piece rock band from Sheffield said they were “horrified” to learn a someone had died at their gig and posted a message of condolence on their Twitter page.
It read: “Words cannot express how horrified we are feeling this evening after hearing about the death of a young man at our show last night.
“Our hearts and deepest condolences go out to his family and loved ones at this terrible time.
“We will comment further in due course.”
The circumstances surrounding Ali's death are not yet known but eyewitness reports claim a man was carried out of the crowd in the 10,000-capacity venue by security and was treated by paramedics.
Alexandra Palace said in a post on the social networking site: “A medical incident occurred at last night’s Bring Me The Horizon concert.
"Our thoughts and condolences are with the individual's family and we would like to express our deepest sympathy to them.
"We hope you can appreciate we cannot provide any further comment at this time.”
Online comments had raised questions about security arrangements on the night.
One gig goer, who did not want to be named, told The Sun Online: “I was very scared. I decided to leave early."
A later statement from the venue said that the death was a "tragic medical incident and unrelated to the extensive security measures in place."
Now moving tributes have been made to Ali on social media sites.
One began: "Rest In Peace Ali Mills.
"What a tragic way to go out, seeing your favourite band play a sold out gig with the whole place rocking.
"That could of [sic] been any of us, the pits were crazy on Friday.
"Stay rocking dude."
Source: Read Full Article