On the trail of 'Dr Death'

Nazi-hunters are now confident that Heim - who was known for his sadism as a doctor at the Nazi's Mauthausen concentration camp in Austria - is seeing out his twilight years near his daughter in southern Chile, or across the border in Argentine Patagonia, the region between the Andes and the south Atlantic.

Acting on information about Heim's whereabouts that he describes as "so significant that it has a high potential", Efraim Zuroff, the Simon Wiesenthal Centre's top Nazi-hunter, is heading for the Chilean town of Puerto Montt, 657 miles (1,058 km) south of the capital Santiago, where he says Heim's 64-year-old daughter lives.

He refuses to divulge the nature of the recent information.

Heim's daughter has said that her father died in 1993 in Argentina, but a death certificate has never been produced. Neither she nor her two brothers, who live in Germany, have claimed the estimated $1.5m (900,000 euros; $750,000) that sits in a European bank account in Heim's name.