Updated

Bulgaria's former agriculture minister is accusing the ex-interior minister of illegally wiretapping everyone in the previous Cabinet.

Miroslav Naydenov's allegations have further fueled a surveillance scandal that has shaken the country ahead of next month's general elections. Some media here call it "Bulgaria's Watergate."

In an interview with the private bTV channel Thursday, Naydenov didn't offer any evidence for his claims against ex-Interior Minister Tsvetan Tsvetanov. But he called on him to take responsibility and quit politics.

Tsvetanov, who now heads the election campaign of the ex-ruling party, has denied any wrongdoing.

Prosecutors recently pressed charges against four former police officials accused of involvement in wiretapping political opponents of the former center-right government, which stepped down amid public unrest in February. They have summoned Naydenov as a witness.