WELLS — The cause of a fire tonight at a seasonal boarding house for foreign exchange students remains under investigation by the State Fire Marshall’s Office.

Capt. Gill Utgard said the fire at 1378 Post Road in Wells caused moderate fire damage to the third floor and smoke damage to the rest of the three-story building.

Fifteen students lived in the building, but everyone got out safely, Utgard said.

Firefighters from the neighboring towns of Ogunquit, North Berwick, Sanford and Kennebunk assisted. The fire was reported at 6:21 p.m.

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