Bulgarian admirals Varicheskov and Dreganov purged according to an American CIA report dated 7 April 1954

An item reported that in 1946 the Bulgarian admirals Varicheskov and Dreganov were purged. In the past they were attached to the Varna Naval District Headquarters.

Source
The report was published on www.archive.org, document number CIA-RPD80-00810A000500340010-8.