Firefighters say it looks like a fire that heavily damaged a home on Verona Island may have started in the basement. A passerby spotted smoke coming from the eaves of the house on Verona Park around 9:45 a.m. and called for help.By the time Bucksport firefighters arrived a few minutes later, the smoke had turned to flames. Crews from Orland, Orrington and Penobscot were also called to help. The captain of the Bucksport Fire Department, Pam Payson, says the construction of the house made this a tough one to fight.”We had an addition off a second part that was two walls thick. Very difficult to get through, so we’ve been chasing fire and heat – actually smoke and heat.”Crews were on the scene for about four hours to make sure the fire was completely out.Investigators with the Fire Marshal’s Office are now searching for a cause.No word on the amount of damage, but we’re told it’s extensive. The homeowner, who wasn’t there at the time, is insured.