The remains of at least 8,000 victims of the Nazis have been found in a mass grave near the site of the Soldau concentration camp in northern Poland.
The bodies had been buried but were then dug up and burnt in an attempt by Nazi officials to hide evidence of their crimes.
Ashes weighing 17.5 tonnes were unearthed last month in two pits each 10 feet deep outside the walls of Soldau last month.
The graves had been discovered by Poland's Institute of National Remembrance (IPN).