The Ontario Ministry of Labour has laid a total of 13 charges in its investigation of a stage collapse one year ago at Downsview Park in Toronto.
Live Nation Canada, Live Nation Ontario Concerts and Optex Staging and Services each face four charges alleging they failed to make sure the staging for a Radiohead concert was being built in a safe manner. An engineer faces one count of endangering a worker as a result of allegedly negligent or incompetent advice or certification.
Just hours before the band was to take the stage on June 16, 2012, part of the outdoor structure came crashing down, killing British drum technician Scott Johnson. Three other workers were injured.
Live Nation is disputing the charges.
The first court appearance is scheduled for the Ontario Court of Justice in Toronto on June 27, according to an Ontario Ministry of Labour spokesman.
Radiohead cancelled seven performances on the European-leg of the tour following Johnson's death.