PORTLAND, Maine (AP) — His U.S. Senate campaign under fire, Maine Democrat Graham Platner said Wednesday that a tattoo on his chest has been covered to no longer reflect an image widely recognized as a Nazi symbol.

The first-time political candidate said he got the skull and crossbones tattoo in 2007, when he was in his 20s and in the Marine Corps. It happened during a night of drinking while he was on leave in Croatia, he said, adding he was unaware until recently that the image has been associated with Nazi police.