YARMOUTH, Maine (AP) -- Police in Yarmouth, Maine, say a gas explosion has leveled one building at a condominium complex, damaged others and left one person missing. Police Chief Michael Morrill says one person is unaccounted for following the explosion, which happened at about 6:20 a.m. Tuesday. Two people suffered minor injuries. Police say the cause of the explosion appeared to be linked to propane. The condo complex is made up of groupings of modern, upscale attached homes. The explosion disintegrated one of the homes, turning wallboard into powder and tossing wood into haphazard piles. Insulation and other debris wound up in at least 10 neighbors' yards and on streets. The state fire marshal's office is at the scene. Power has been cut off to much of the town.