A man accused of driving drunk and killing three young men in Beaumont, Alta., pleaded not guilty this morning in a Wetaskiwin courtroom.

Jonathan Pratt faces three counts each of impaired driving causing death, driving with a blood-alcohol content over .08 causing death, and manslaughter in the deaths of Bradley Arsenault, 18, Thaddeus Lake, 22, and Kole Novak, 18.