Konstantin Bychek, deputy head of the KGB investigation department, said this on the STV television channel.

“More than 20 people were detained - both the perpetrators of the terrorist acts and their accomplices.

The criminal investigation is ongoing.

The accused actively cooperate with the investigation, give confessions, exposing themselves and their accomplices, ”TASS quoted him as saying.

In July, Gaidukevich said that unknown persons pelted his house with Molotov cocktails.

The KGB opened a criminal case.