The Nazi era’s famed 'Angel of Death' Dr. Josef Mengele it turns out was also responsible for creating a town of twins in a small Brazilian town, an Argentine historian has claimed.

One in five pregnancies in the small Brazilian town have resulted in twins - most of them blond haired and blue eyed, reports The Telegraph.

The steely hearted 'Angel of Death', whose mission was to create a master race fit for the Third Reich, was the resident medic at Auschwitz from May 1943 until his flight in the face of the Red Army advance in January 1945.

His task was to carry out experiments to discover by what method of genetic quirk twins were produced – and then to artificially increase the Aryan birthrate for his master, Adolf Hitler.

In a new book, Mengele: the Angel of Death in South America, the Argentine historian Jorge Camarasa, a specialist in the post-war Nazi flight to South America, has painstakingly pieced together the Nazi doctor's mysterious later years.

After speaking to the townspeople of Candido Godoi, he is convinced that Mengele continued his genetic experiments with twins – with startling results.

He reveals how, after working with cattle farmers in Argentina to increase their stock, Mengele fled the country after Israeli agents kidnapped fellow Nazi, Adolf Eichmann.

He claims that Mengele found refuge in the German enclave of Colonias Unidas, Paraguay, and from there, in 1963, began to make regular trips to another predominantly German community just over the border in Brazil – the farming community of Candido Godoi.

"There is testimony that he attended women, followed their pregnancies, treated them with new types of drugs and preparations, that he talked of artificial insemination in human beings, and that he continued working with animals, proclaiming that he was capable of getting cows to produce male twins."

The urbane German who arrived in Candido Godoi was remembered with fondness by many of the townspeople.

The people of Candido Godoi now largely accept that a Nazi war criminal was an inadvertent guest of theirs for several years in the early 1960s.

"Nobody knows for sure exactly what date Mengele arrived in Candido Godoi, but the first twins were born in 1963, the year in which we first hear reports of his presence," Camarasa said.