One of Europe's largest outdoor music festivals was canceled Friday after a stage collapsed during a violent storm in Belgium, killing five people and injuring 50 others, organizers said.

Belgian authorities confirmed Friday that the death toll has gone up.

"A fifth person has died," Andy Payne, spokesman for the nation's crisis center, told CNN. He said he did not know the circumstances surrounding the death.

The storm struck Thursday just hours after Pukkelpop kicked off. The scheduled three-day event was in Hasselt, east of Brussels.