Bosses at a concert promoting company behind Radiohead's doomed Canadian gig last year (12) have been charged over the death of a technician.

Officials at the Canadian Ministry of Labour launched an investigation into the stage collapse which killed 33 year old Scott Johnson last June (12), hours before the British rockers were set to take to the stage in Toronto.

They have now charged Live Nation Canada on eight counts under the Occupational Health and Safety Act, while another four have been levied against staging company Optex Staging and Service. An engineer has also been hit with one charge.

Live Nation bosses have vehemently denied any wrongdoing, releasing a statement which reads, "We absolutely maintain that Live Nation and our employees did everything possible to ensure the safety of anyone who was on or near the stage involved in the tragic incident that led to the unfortunate death of Mr. Scott Johnson."

A trial has been slated to begin on 27 June (13).