UPDATE: Associated Press is reporting 3 dead and 70+ injured:
BRUSSELS (AP) -- A storm swept through an open air music festival in eastern Belgium on Thursday killing at least three people and injuring more than 70 others, an official said.
Video from the site showed stage equipment dangling in high winds near the town of Hasselt, about 50 miles (80 kilometers) east of Brussels, as rain-soaked concertgoers at the Pukkelpop music festival ran for cover.
An official statement from Cullen Omori:
We had just finished the first song of our set at Pukkelpop when the stage/tent started shaking and simply thought it was a storm passing through. I made a comment about Cheap Trick and we were about to play the next one when our tour manager yelled at me to run off the stage. Right then the tress collapsed 1 foot in front of Max. At this point we thought only the stage broke, not the tent. Amid the chaos it was hard to tell exactly what had happened, but after the rescue teams started coming in it became clear that there were severe injuries and we are now being told there are reports of multiple deaths. Our thoughts and prayers go out to the families who lost loved ones in today's tragedy.