One person was killed and at least three others were injured after a stage collapsed in Toronto this afternoon before a scheduled Radiohead concert. According to reports, the stage at Toronto's Downsview Park collapsed around 4 p.m. One person was killed, and two others were treated at the scene for minor injuries. One person may still be trapped under the stage.

It's unclear what caused the collapse. The Radiohead show has since been cancelled. Today is also the 15-year anniversary of the release of Radiohead's classic album, OK Computer.