Nearly 100 people fell ill and 36 people (many of them minors) were hospitalized after an Avicii concert in Boston on Wednesday. Today, we're bringing you video and eyewitness accounts of the event.
Officials suspect that dehydration, alcohol and the ecstasy-based drug Molly could be to blame for the chaos.
"You can clearly tell that some people might have been overly intoxicated, or perhaps might have been on other illegal substances," said Ben Esakof, who was an eyewitness at the concert.
Watch the video to learn more about Avicii and why he's the most-streamed artist on the internet.