German investigators who have hunted Nazi war criminal Aribert Heim for decades said Thursday that new information indicating the former concentration camp doctor died in Egypt in 1992 appears credible and that they will attempt to locate his corpse to rule out any doubt. The Baden-Wuerttemberg state police unit that investigates Nazi-era crimes is preparing a request asking Egyptian authorities to allow them to pursue the case in Cairo, unit spokesman Horst Haug said. "We want to attempt to find the body," Haug told The Associated Press. Heim's son Ruediger told Germany's ZDF television that his father fled to Egypt after authorities tried to arrest him at his Baden-Baden home in 1962. The younger Heim contradicted previous statements that he had never had any contact with his father since that time, telling ZDF that he had met with him several times in Cairo, starting in the mid-1970s.