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Aaron Chief from Onion Lake, Sask. is wanted by RCMP. (Image Credit: Submitted/Saskatchewan RCMP)
WANTED MAN

Two arrested, one wanted after RCMP pursuit near Onion Lake

May 21, 2026 | 12:32 PM

Two individuals have been arrested, and one suspect remains wanted by Saskatchewan RCMP after a vehicle fled an attempted traffic stop near Onion Lake. 

On May 17, at approximately 5:10 p.m., Onion Lake RCMP observed a vehicle travelling at a high rate of speed near Onion Lake. Officers attempted to pull over the vehicle, but the driver did not comply. A short time later, the vehicle stopped near French Butte, where two occupants fled on foot. Two other occupants remained in the vehicle and were arrested. 

During a search of the vehicle, officers located and seized a loaded firearm. 

Onion Lake RCMP Detachment engaged the Lloydminster Crime Reduction Team, part of the Saskatchewan RCMP’s Saskatchewan Enforcement Response Teams, North Battleford Police Dog Services, and Rosetown RCMP and Kindersley RCMP Combined Traffic Services to assist in locating the outstanding suspects. 

A police dog tracked one suspect for approximately five kilometres and that individual was arrested. 

As a result of continued investigation, Matthew Chief, 40, of Onion Lake, has been charged with: 

  • one count, resist/obstruct peace officer 
  • one count, possession of a firearm when knowing possession unauthorized 
  • one count, unsafe storage of firearm 
  • one count, possession of firearm in motor vehicle 
  • one count, possession of a prohibited weapon when knowing possession unauthorized 
  • one count, possession contrary to order 

Timothy Weeseekase, 35, of Onion Lake, has been charged with one count of possession of a firearm. 

Chief appeared in Lloydminster provincial court on May 19. Weeseekase is scheduled to appear in Lloydminster provincial court on July 15. 

The other vehicle occupant was released without charge. 

Onion Lake RCMP continues to seek the other male suspect and is asking the public to report sightings and information on the whereabouts of 44-year-old Aaron Chief from Onion Lake. A warrant has been issued for his arrest. 

Aaron Chief is charged with: 

  • one count, flight from peace officer 
  • one count, dangerous operation of a motor vehicle 
  • one count, resist/obstruct peace officer 
  • one count, possession of a restricted firearm with ammunition without licence/registration 
  • one count, unsafe storage of firearm 
  • one count, possession of firearm in motor vehicle 
  • one count, possession of a prohibited weapon when knowing possession unauthorized 
  • one count, possession contrary to order 

He is described as five-foot-nine and 180 pounds, with brown eyes and black hair. He also has facial hair and a tattoo on his neck. 

If you see Chief, RCMP say do not approach him. Report all sightings and information on his whereabouts to Onion Lake RCMP by calling 310-RCMP. Information can also be submitted anonymously by contacting Saskatchewan Crime Stoppers at 1-800-222-TIPS (8477) or www.saskcrimestoppers.com

Cjnbnews@pattisonmedia.com