Radiohead stage collapse victim was band's drum technician Toronto Police spokesman Tony Vella said a 45-year-old man hospitalized with a head injury was improving and his life was not in danger. The other two were treated at the scene. Tony Bellavance, Fire Services Platoon Chief in Toronto, said officials were alerted to a person trapped under the rubble and crews assisted in extracting the victim. He said: "It was a crushing injury that killed the man." Tony Vella, a spokesman for Toronto police said crew were setting up the stage when it collapsed. They were setting up when the top portion collapsed on top of them. Unfortunately, four people were hurt. The remainder of the people, when they heard the stage coming down, ran from the area," Mr Vella said. A force spokesman later tweeted that once the structure was deemed safe to work around, forensic officers would begin a joint investigation with the coroner and the Ministry of Labour. The Toronto concert was Radiohead's final North American date The Oxfordshire band had been due to play to a sold-out crowd at Downsview Park in Toronto. A statement on the band's website said: "Due to unforeseen circumstances the radiohead show at downsview park tonight has been cancelled. Ian West, Mr Johnson's drum teacher in Doncaster, said his former pupil toured the world with famous bands, including Radiohead and Keane. It was a very, very big shock. He was a great student and a great drummer. He got a lucky break and made the most of it, he never looked back. He was a fantastic guy, never down, very enthusiastic. He was very thoughtful and would do anything for you, he was spot on. Jack Lawrence Brown, drummer with White Lies, tweeted: Devastated to learn that the man killed in the Radiohead stage collapse was drum tech Scott Johnson. Scott worked with White Lies on a show earlier in the year as my drum tech. A very talented man and a lovely guy all round. Glad to have known him. A big loss. RIP Scott. Geoff Barrow, instrumentalist with Bristol band Portishead, wrote: Shocking to hear the passing of crew member Scott Johnson of the radiohead tour - my thoughts and condolences are with everyone involved. Dan Snaith of Caribou, who were set to open for Radiohead, tweeted: We are profoundly saddened by what happened today. All our sympathy is with the band and crew and the families of those affected. It was set to be the band's final date in North America before the European leg start on June 30 in Rome.