China News Service, April 29. According to the Russian Satellite Network report, on the 29th local time, the Bulgarian Ministry of Foreign Affairs announced that it had listed a Russian diplomat as an "unwelcome person" and requested Russian law enforcement agencies to assist in investigating the Bulgarian weapons depot. event.

Russia said it would respond to this and take countermeasures.

  According to reports, the Russian Ministry of Foreign Affairs stated that Russia will take retaliatory measures against Bulgaria in response to Bulgaria’s expulsion of Russian diplomats.

Earlier, Bulgarian National Television quoted the country’s prosecutor’s office to report that six Russian citizens were suspected of being involved in multiple explosions in Bulgarian factories and military warehouses.

  On March 22, the Bulgarian Ministry of Foreign Affairs declared two Russian diplomats as "unwelcome persons" and asked them to leave the country within 72 hours.

Russia subsequently expelled two diplomats from the Bulgarian embassy in Russia.

  According to reports, Bulgaria expelled five Russian diplomats three times in 2020.