The United States, Britain and Ukraine are behind the terrorist attack at Crocus City Hall, the chief of Russia's Federal Security Service (FSB) Alexander Bortnikov has told the media, Paralel.Az reports citing TASS.

"We believe that this is true. In any case, we are now talking about the factual information we have. This is general information, but they have a long record of this sort," he said after participating in an enlarged meeting of the Prosecutor General's Office board when asked whether the US, Britain, and Ukraine were behind the terrorist attack.

Bortnikov believes that Ukraine has been trying to prove it is capable enough.

"What is it expected to do to demonstrate its capability? It is expected to carry out sabotage and terrorist acts in the rear. This is what both the chiefs of Ukraine's special services and the British special services are aiming at. US special services have repeatedly mentioned this, too," he said.

He pointed out that there was a large amount of information in the public space "showing that the West and Ukraine are out to cause greater harm to our country."

"There have been drone strikes, strikes by uncrewed boats at sea, and incursions by groups of saboteurs and terrorist organizations into our territory," Bortnikov concluded.