Former farm minister Miroslav Naydenov said he and the other members of the centre-right cabinet of prime minister Boiko Borisov which resigned some two months ago, had been illegally spied upon on orders by former interior minister Tsvetan Tsvetanov.
The cabinet ministers and other politicians were eavesdropped upon in order to be later manipulated, Naydenov told bTV channel on Thursday. He appealed to Tsvetanov to resign as deputy leader of GERB, the party headed by Borisov.
In response, Tsvetanov said that he had always acted in the best interests of the state, adding that all his actions been sanctioned by the prime minister.
For his part, Borisov said he would not ask for Tsvetanov's resignation, saying that he is the party's "driving force".
Later in the day, Naydenov was placed under a security watch by the Sofia Prosecutor's Office which said his life could be in danger.