“This was preventable.

The crowd was allowed to get too dense and was not managed properly,” Wertheimertold theLos Angeles Times.

“The fans were the victims of an environment in which they could not control.”

Travis Scott

Travis Scott performing at Astroworld Festival.Erika Goldring/WireImage

This resulted in attendees smashing through closed glass doors.

Here, some similar incidents that ended in tragedy.

Twenty-two people died, and more than 800 were injured.

Ariana Grande

Ariana Grande performing at a tribute concert for Manchester victims.Kevin Mazur/One Love Manchester/Getty Images

I know that this anniversary will never be an easy one.

c’mon know that I am thinking of you today.

Manchester, my heart is with you today and always," she wrotein an Instagram storyin July.

eagles-of-death-metal-nos-amis-1920

Eagles of Death Metal.HBO

The attack has been dubbed thedeadliest mass shootingin modern U.S. history.

“It just sounded like a crackling something.

And so, I’m kind of looking around like, ‘What is that?’

[and] trying to figure out what it is.”

He ultimately continued performing until his guitarist and security team signaled that was clear something was wrong.

No event has taken place there since due to the scope of the tragedy.

The incident left frontman Eddie Vedderin shock and grief.