William Ahmo uttered the words “I can’t breathe” more than 20 times while officers swarmed and restrained him in a Manitoba jail, video footage of his final hours at the Headingley Correctional Centre shows.

The video footage, shot on a handheld camera inside the jail more than two years ago, was shown in a Winnipeg courtroom last week during the first day of a trial for the corrections officer who faces charges in Ahmo’s death.