He claimed the subsurface soil layers in both locations did not show the pattern of disturbances that would be expected if mass graves holding up to a million bodies existed, according to the standard historical view. He does however admit there is a grave visible on WW2 aerial photos of Treblinka that could hold up to 10,000 in an area he didn't scan. The estimated number of exterminated at Treblinka alone is up to one million, meaning his findings are considered incorrect by historians and unsupported.
Krege maintains that he took a team of scientists to Treblinka in October 1999. However according to British historian Alan Heath, Krege did not have permission from the authorities in Warsaw, Siedlce nor in Treblinka itself. This led this historian to assume that Krege either never visited Treblinka at all or was at the site only for a very short time for a video of the scanning to be taken. This opinion is further supported by the fact that Fredrick Töben, director of the Adelaide Institute which funded Krege's team, did not present the findings at the Iranian Holocaust Conference which he attended in December 2006.
Krege has not only failed to publish his findings but also has failed to respond to questions as to the actual dates of his alleged visits to Treblinka and Bełżec nor challenges to visit the site with qualified scientists.
To avoid arrest in the European Union, Krege used his brothers Passport to travel by air to London and then overland to the Ukraine in July 2009.