The Ontario Ministry of Labour has laid 13 charges against three companies and one engineer in connection with the fatal stage collapse at an outdoor Radiohead concert in Toronto last summer.

A drum technician for the band was killed, and three others were injured, after a massive outdoor stage at Downsview Park partially collapsed hours before the popular U.K. band was to play for a sold-out crowd of 40,000 people.

The ministry said on Friday that Live Nation Canada Inc., Live Nation Ontario Concerts GP Inc., Optex Staging & Services Inc., and an unidentified engineer were all facing charges under the Occupational Health and Safety Act.

Read the full story: CBC News