From "Jaws"

Extramilitary Structure at “SPARTAK” Swimming Pool Collects Discrediting Archive against the President, Politicians and Journalists
A structure, functioning like a private Ministry of the Interior and having rich archives, works at the “Spartak” swimming complex in one of the capital’s residential districts, i. e. “Lozenets”. The impression of a true extramilitary formation becomes stronger by the presence of a striking security guard group, cruel and armed; it guards the private site, which is Alexey Petrov’s property – a DANS officer and personal advisor of the chief of the Agency, Petko Sertov. In the premises, where there used to be masseur’s services, rooms for relaxation and stores some time ago, we find a secret section now. Files appear on metal shelf systems, arranged in alphabetical order.

DANS Officials and Customs Agents Reanimate the Drug Canals
DANS officer, Alexey Petrov, more famous for being one of the gangsters in the beginning of the democratic changes, is at the root of the revival of the contraband canals, once established by State Security. His active assistant in this undertaking is the Deputy Director of the “Customs” National Agency, Rumen Bozhinov, known among his colleagues with the nickname “the new Samokovets”.

Alexey Petrov Has Conquered DANS and Now He Threatens Sergey Stanishev and Petko Sertov with Gay Compromises

The DANS officer Alexey Petrov is the real master of the National Security Agency. He has already started giving orders concerning the staff of the special structure: he said who to be promoted or to get fired and what salaries the officials should be paid. And that happened every single day in Petko Sertov’s office. He bragged he had discrediting materials proving gay sexual orientation against the Prime Minister and the Chief of DANS, Petko Sertov; and having them, Petrov held them both at bay – that is what his colleagues describe being part of  the National Security Agency staff.