At approximately 1:00 a.m. on Thursday, Enoch RCMP conducted traffic stops in the community and found a stolen vehicle with four occupants.
RCMP said checks revealed ammunition and drug paraphernalia inside the vehicle.
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Leanna Morin-Pariseau, 28; Darrell Gauthier, 30; Andrew Rachar, 23; and Donovan Savidant, 31, were charged with possession of stolen property and firearm-related offences.
Pariseau has also been charged with drug-related offences.
The vehicle was reported stolen out of Fort Saskatchewan on May 23.
All four remain in custody and will make their first court appearances on Wednesday, June 1, at Stony Plain Provincial Court.