A husband and father of three who vanished at a Wisconsin lake this summer may have faked his own death and fled to Eastern Europe, authorities said, and the sheriff is now urging the missing man to come forward.

Ryan Borgwardt, a married father of three, has been missing since August after leaving for a relaxing fishing trip on Green Lake, about an hour north of his home in Watertown, Wisconsin. Investigators now suspect the experienced kayaker faked his own death and fled to Europe via Canada.