Hamilton Police released a video of the suspects accused of robbing the Ancaster Costco.
Officers were dispatched to the Ancaster location on the evening of June 14, following reports that two black male suspects had entered the store where they threatened employees and stole an undisclosed amount of merchandise.
One of the suspects was armed with what appeared to be a handgun.
They were last seen running from the area.
The store was open at the time and police believe there could be witnesses they have not yet spoken with.