The fire at Walmart in Trenton has been deemed suspicious.
Quinte West OPP Commander Christina Reive says they have not labelled it as arson yet, however more investigation is needed.
More than $4 million in damage was caused, after the blaze started in a back room.
Smoke caused heavy damage throughout the store on November 15th.
It was closed for just over a week, as crews worked around the clock clearing product and bringing in new merchandise.