Lindgren was identified and arrested by the Swedish police after they received a tip from the public on March 29, 2006. His DNA matched the DNA previously secured from the victims. On April 22 Lindgren confessed to six of the assaults. On July 19 he was convicted of eight assaults by the Umeå District Court and sentenced to 14 years in prison. Lindgren appealed to the Upper Norrland Court of Appeal, which on October 2 upheld the district court's sentence plus one case of rape in 2000. Lindgren's appeal to the Supreme Court was not granted.