A fire swept through an abandoned paper mill in the central Maine town of Gardiner, and police took a “person of interest” into custody. Officials say about half of the old Yorktown Paper Mill on Water Street was razed by the fire, which was reported at around 3 a.m. Wednesday. The building formerly belonged to Gardiner Paperboard Corp. Officials say that two fires engulfed separate ends of the building, but Gardiner Police Chief James Toman couldn’t say whether the fire was deemed suspicious. Toman says a man was detained after authorities noticed a door open in a nearby building. They found a man in nearby woods and took him into custody.