Lambton OPP have now charged two men with armed robbery following a heist at a commercial property in Watford.
Police say on February 25, merchandise was stolen by four people, one of whom was armed with a weapon.
On Thursday, OPP arrested two suspects.
James Pigeau, 31, and 32-year-old Clarke Moore, both of London, are charged with robbery with a weapon, wearing a disguise with intent, and possession of stolen property.
Pigeau is also charged with driving while disqualified, while Moore is charged with failing to comply with a probation order.