Gerd Seewald, former Colonia’s official, was responsible for creating in the late 1970th of 36,000 secret files

Gerd Seewald said he "was aware that people were brought here against their will but only recently learned that they died here." He said he does not know how many prisoners died there but his guess is 40-50 people. He said he learned about Boris' disappearance in 1985 only from the local and international press. (That is a very questionable statement.)