Bulgaria has recalled 13 ambassadors who were listed as spies for their country during the Communist era, a Foreign Ministry spokeswoman said Tuesday.

Among those recalled were diplomats in Germany, Greece, Sweden and Bosnia, as well as the country's ambassador to UNESCO, the daily Dnevnik reported.

Two more groups of diplomats involved in the spying controversy are to be summoned at later dates.

More than 200 Bulgarian diplomats were exposed as former state security collaborators and spies in a parliamentary report on secret files in late 2010.

Nearly half of those exposed were still active in the diplomatic service.

Prime Minister Boyko Borisov's conservative government said that it plans to 'part ways' with all diplomats implicated in the report.

Bulgaria was a part of the Soviet-led Communist bloc. It joined NATO in 2004 and the European Union in 2007.