A decision to investigate 30 alleged former guards at Auschwitz was prompted by the case of Ukraine-born John Demjanjuk.
Demjanjuk was the first Nazi war criminal to be convicted in Germany without evidence of a specific crime or victim but purely on the grounds he had served as death camp guard.
He died last year, aged 91, while appealing against a five-year jail sentence for complicity in the murder of more than 28,000 Jews at the Sobibor camp in Poland.
More top news
It's another mild day in the north and west, but cold in the south and central England.
The singer, songwriter and rhythm guitarist for the British rock'n'roll band died on Christmas Eve aged 68.
During a five-day period last week, two police forces stopped 151 motorists for various offences on the M3, M4, M40, M27 and A34.