The notorious Nazi doctor, Josef Mengele, tinkered with women in a Brazilian town to produce ‘master-race’ twins, a historian claims.

The reviled Nazi war criminal was dubbed the ‘Angel of Death’ for his cruel human experiments. Most of Doctor Mengele’s victims in the Auschwitz death camp died painfully.

Oddly, Mengele seemed to have had an obsession with identical twins and selected them for his inhumane research, reports the UK’s Daily Telegraph.

After the war he fled to Latin America and successfully evaded justice up until his death in 1979.

Now an Argentinean historian claims Mengele went on with his experiments in hiding, causing a sharp increase in the birth of twins in a small Brazilian town.

According to Jorge Camarasa, who is investigating the flight of Nazis to Latin America after WW2, Mengele often visited the town of Candido Godoi on the Paraguay-Brazilian border.

Under the name of Rudolph Weiss, it is claimed, Mengele initially provided veterinary services. Later he began treating people. He had a special interest in fertility, tended pregnant women, and claimed he could perform artificial insemination.

Anencia Flores da Silva, former mayor of Candido Godoi, recalled: “He appeared to be some sort of rural medic who went from house to house. He attended women who had varicose veins and gave them a potion which he carried in a bottle, or tablets which he brought with him.”

Over the years, one pregnancy in five produced twins in the town, compared with an average of one in 80. The town's crest shows two identical profiles and a road sign welcomes visitors to a “Farming Community and Land of the Twins”. There is also a museum of twins.

“I think Candido Godoi may have been Mengele's laboratory, where he finally managed to fulfil his dreams of creating a master race of blonde, blue-eyed Aryans,” Jorge Camarasa said.

Most Candido Godoi residents now believe the notorious Nazi had a hand in the peculiar demographics of the town.