Justin Bieber has been rushed to a hospital in London after passing out and collapsing on stage with four songs left during a show in O2 Arena.

“He got oxygen from emergency personnel,” a rep told E! News, adding, “He insisted on finishing the show. He is on the way to the hospital right now.”

Bieber’s manager, Scooter Braun, is said to have told the concert goers that Bieber has been feeling “very low of breath” throughout the concert and was backstage with EMTs. The strange thing is that Bieber has been spotted around town in a gas mask on two previous occasions.

Justin Tweeted the shirtless pic of himself from his hospital bed with the caption, “getting better,” adding, “thanks for everyone pulling me thru tonight. best fans in the world. figuring out what happened. thanks for the love.”

Watch Scooter Braun explain what happened to Justin in the video clip below: