RCMP Alert: Wanted Firearms Suspect in Onion Lake, Saskatchewan

Community Safety Alert Overview

On May 17, 2026, officers from the Onion Lake RCMP attempted to stop a speeding vehicle near Onion Lake, Saskatchewan. The vehicle failed to pull over, fled the area, and later came to a stop near French Butte. Two occupants ran from the scene on foot, while two others stayed in the vehicle and were taken into custody. A loaded firearm was found and seized from the vehicle during a subsequent search.

Following further investigation, two men from Onion Lake have been arrested and charged in relation to the incident, and one male suspect remains wanted on a warrant. The RCMP are actively searching for 44-year-old Aaron Chief and are asking the public across Saskatchewan to report any sightings or information about his whereabouts. This alert is part of ongoing efforts to address firearms-related crime in rural communities and small population centres across Canada, similar to areas tracked in national data such as Duncan Lake 2 crime and safety statistics.

Official RCMP Incident Details

At approximately 5:10 p.m. on May 17, 2026, Onion Lake RCMP observed a vehicle travelling at a high rate of speed near Onion Lake. When officers activated emergency lights and sirens to conduct a traffic stop, the vehicle did not stop and fled. A short time later, the vehicle stopped near French Butte. Two occupants ran from the vehicle; two others remained and were arrested at the scene.

During a search of the vehicle, officers located and seized a loaded firearm. To assist in locating the suspects who left the vehicle, Onion Lake RCMP coordinated with the Lloydminster Crime Reduction Team (CRT), which is part of Saskatchewan RCMP’s Saskatchewan Enforcement Response Teams (SERT), as well as North Battleford Police Dog Services (PDS) and Rosetown RCMP and Kindersley RCMP Combined Traffic Services. A police dog tracked one of the fleeing suspects for approximately five kilometres, leading to his arrest.

Charges Laid

As a result of the investigation, the following charges have been laid:

Charges Against Matthew Chief, 40, from Onion Lake

• One count of resisting or obstructing a peace officer, Criminal Code Section 129(a)
• One count of possession of a firearm while knowing possession is unauthorized, Section 92(1)
• One count of unsafe storage of a firearm, Section 86(2)
• One count of possession of a firearm in a motor vehicle, Section 94(1)
• One count of possession of a prohibited weapon while knowing possession is unauthorized, Section 92(2)
• One count of possession of a weapon contrary to a court order, Section 117.01(1)

Court appearance: Matthew Chief appeared in Lloydminster Provincial Court on May 19, 2026.

Charges Against Timothy Weeseekase, 35, from Onion Lake

• One count of possession of a firearm, Criminal Code Section 94(1)

Court appearance: Timothy Weeseekase is scheduled to appear in Lloydminster Provincial Court on July 15, 2026.

The fourth occupant of the vehicle has been released without charge at this time.

Wanted Suspect: Warrant for Arrest of Aaron Chief

The Onion Lake RCMP are actively seeking to locate Aaron Chief, 44, from Onion Lake. A warrant has been issued for his arrest in connection with this incident. He faces several charges related to flight from police, dangerous driving, and firearms offences.

Image: RCMP-supplied photo of wanted suspect Aaron Chief.

Charges Against Aaron Chief, 44, from Onion Lake

• One count of flight from a peace officer, Criminal Code Section 320.17
• One count of dangerous operation of a motor vehicle, Section 320.13(1)
• One count of resisting or obstructing a peace officer, Section 129(a)
• One count of possession of a restricted firearm with ammunition without licence or registration, Section 95(1)
• One count of unsafe storage of a firearm, Section 86(2)
• One count of possession of a firearm in a motor vehicle, Section 94(1)
• One count of possession of a prohibited weapon while knowing possession is unauthorized, Section 92(2)
• One count of possession of a weapon contrary to a court order, Section 117.01(1)

Description of Wanted Suspect: Aaron Chief

• Age: 44
• Height: 5 ft 9 in
• Weight: 180 lbs
• Eye colour: brown
• Hair colour: black
• Other features: facial hair and a tattoo on his neck

Community: RCMP & Crime Canada Need Your Help

The RCMP advise that members of the public should not approach Aaron Chief if they see him. He is wanted on firearms and dangerous driving-related charges, and officers should be the ones to make contact. Your information, even if it seems minor, could be critical in safely resolving this search.

If you see someone matching this description or have any information about his current location, contact:

• Onion Lake RCMP: call 310-RCMP (no area code required within Saskatchewan)
• Saskatchewan Crime Stoppers: call 1-800-222-TIPS (8477) or visit www.saskcrimestoppers.com to submit information anonymously

Residents in Onion Lake and surrounding rural communities, including those in regions comparable to other small communities featured in our data such as Inklyuhkinatko 2 crime and safety information, are encouraged to remain alert and report suspicious activity promptly.

CrimeCanada.ca Safety Perspective

From the perspective of CrimeCanada.ca, this incident highlights several key safety concerns that affect communities across Saskatchewan: high-speed flight from police on public roads, the presence of loaded and potentially prohibited firearms in vehicles, and suspects attempting to evade arrest on foot in rural areas. These factors increase risks not only for police officers, but also for nearby drivers, pedestrians, and residents.

We encourage community members to support public safety by reporting impaired or dangerous driving, suspected illegal firearms, and unusual activity around parked vehicles or rural roads. If you witness a police operation in progress, keep a safe distance, follow officer directions, and avoid sharing live locations of police movements on social media, as this can unintentionally aid those trying to evade arrest. Your timely and accurate reports to 310-RCMP or Crime Stoppers at 1-800-222-8477 play a crucial role in helping law enforcement remove illegal weapons from circulation and prevent further harm.

Official Source & Community Safety

This safety alert is based on an official release from the Royal Canadian Mounted Police (RCMP). CrimeCanada.ca aggregates and analyzes this data to keep the saskatchewan community informed, aware, and safe. We are an independent safety data aggregator and not the original creators of the underlying incident report.

Read the full official release here: RCMP Official Statement.