Bulgaria confirms arrest of six-member spy-ring working for Russia
"AUTHORITIES IN BULGARIA HAVE confirmed media reports aired last week, which alleged that at least six members of a spy-ring working for the government of Russia had been arrested in the capital Sofia. News of the arrests was first reported by the Bulgarian National Television, or BNT, late on Thursday, March 18. Citing “government sources”, BNT said that “several” Bulgarian citizens had been arrested in simultaneous raids by the country’s counterintelligence service.
On Friday, March 19, the Bulgarian government confirmed the BNT report, saying that six Bulgarian citizens had been charged with espionage on behalf of the Main Directorate of the General Staff of the Russian Armed Forces, known commonly as GRU."
https://intelnews.org/2021/03/22/01-2971/