Onion Lake RCMP is asking the public to report sightings and information on the whereabouts of 27-year-old Tristan Whitstone who is wanted in connection to a serious assault that occurred in August in the Onion Lake Detachment area. A warrant has been issued for his arrest for a variety of charges including aggravated sexual assault and forcible confinement. Whitstone is described as 6’1″ tall and 240 pounds with brown eyes and black hair. RCMP say do not approach Tristan Whitsone but anyone with information can contact Onion Lake RCMP or Crimestoppers.