No rest for Federal Investigators and Rochester Firefighters this Thanksgiving.

They are working on the devastating fire at a Family Dollar Store.

The store and most of the plaza surrounding it on North Clinton Avenue was destroyed in the fire on Monday.

Damage is estimated at more than three million dollars. Investigators aren't ruling out arson.

Wednesday was the first time they were able to get into the burned out building.

"I brought with me six additional certified fire investigators i brought with me an electrical engineer. I brought resources that the fire dept has or may be able to get but at our level we were able to bring in the complimentary resouces, " said Chris Porreca of the A.T.F.

Firefighters are trying to detemrine whether this fire is connected to suspicious fires at other Family Dollar Stores.

There was also a fire at a store on North Goodman Street on Monday and a fire at a store in Buffalo last month.