Entertainment

Photo: The Canadian Press. All rights reserved.

FILE - In this Monday, March 4, 2013 file photo, Canadian singer Justin Bieber performs at the O2 Arena in east London. Bieber is recovering after fainting backstage at a concert in London. A spokeswoman for Bieber said Thursday, March 7, 2013, that the 19-year-old pop star was given oxygen and took a 20-minute reprieve after fainting backstage at London's O2 Arena. (Photo by Joel Ryan/Invision/AP, File)

Justin Bieber says he is "getting better," after fainting backstage at a concert in London, and the venue says Friday's show is scheduled to go ahead as planned.

A spokesman for the O2 Arena said the 19-year-old pop star was treated backstage during Thursday's concert after becoming short of breath, but recovered and finished his set.

"As far as we are concerned everything is on, on, on" for Friday's show, Jeremy King said.

"He was treated by our team of medics and after further examination they didn't find anything more serious or worrying."

A spokeswoman for Bieber said he was recovering after Thursday's incident, which saw him given oxygen before returning to the stage.

"Justin has been released from the hospital after a check-up and, while he's feeling a little under the weather, he's currently planning on going ahead with tonight's show," the spokeswoman said Friday. She demanded anonymity to discuss the star's condition.

Bieber later posted a shirtless photo of himself in a hospital bed, saying he was getting better and listening to Janis Joplin. Before that on Twitter he thanked "everyone pulling me thru tonight."

"Best fans in the world," he wrote. "Figuring out what happened. Thanks for the love."

Video footage from the concert shows Bieber appearing to fade during a performance of his up-tempo hit, "Beauty and a Beat." He slows down, puts a hand to his head then bends over, resting his hands on knees before walking slowly to the back of the stage.