Up to 10 staff may lose their jobs at two tyre stores in Dungannon damaged by suspected arson attacks, the owner of the depots has warned.
The owner put the damage to his two depots at £500,000
Firefighters were called to the blazes at Scotch Street and Ballygawley Road just before 0500 BST on Wednesday.
Both fires were brought under control and residents who were moved from their homes have since returned.
Proprietor Philip White said he was "devastated". He estimated the damage caused by the fires was worth £500,000.
Mr White said premises he owns in Armagh have been targeted twice before.
Area commander Ian Doyle said the fact the fires were almost at the same time pointed in the direction of arson.
Philip White said his business had been targeted before
Earlier, group commander John Allen said the homes had been evacuated because of an explosion risk.
"We have taken the precautionary measure of evacuating some people from their homes for their own safety and well-being," he said.
"We also have to consider that there is asbestos within the roof. Our primary concern is for the safety of the public."