Over 100 Bulgarian ministers, who came to power since the fall of communism, had served as agents of the former secret police, a historical commission said on Wednesday.

Bulgaria, a European Union newcomer, has been among the last former Soviet bloc countries to deal with its painful communist past and in late 2006 approved a law to unmask members of its Cold War spy agency, Darzhavna Sigurnost.

Former agents will not have to quit their posts and will not be banned from running for political office.