Soviet forces occupied Czechoslovakia in 1945 and Borkovský came under suspicion for his pro-German paper.[1] He was arrested by the NKVD, the Soviet secret police, in May despite protesting that he had been forced to write the paper.[3][2] Borkovský was loaded onto a transport destined for a Siberian gulag but was saved at the last moment by the intervention of Jaroslav Böhm, director of the State Archaeological Institute.[2] In 1946 Borkovský published a revised paper that identified the burial as a Slav noble of the Przemyslid dynasty.[3]