BOOM, Belgium (AP) — Fans roared in excitement and organizers sighed with relief as the Tomorrowland music festival kicked off Friday — just two days after a massive fire engulfed the main stage and threw one of Europe's biggest summer concert events into doubt.

Video showed thick plumes of black smoke rising from the famed festival grounds in Boom, Belgium on Wednesday. Fireworks could also be seen and heard going off in the distance.

A day before Tomorrowland was set to kick off on Thursday, videos of the fest’s main stage engulfed by flames began circulating online. The festival’s official website and Instagram released an official statement confirming the “serious incident and fire,” adding that the event’s “beloved Mainstage has been severely damaged.”