Russian President Vladimir Putin on Friday held a session with permanent members of the Security Council via video, according to the Kremlin.

Putin told his Security Council that they needed to discuss additional "anti-terrorism measures" to safeguard facilities controlled by law enforcement bodies.

Putin said on Thursday that Russia had been hit by a "terrorist attack" in the southern Bryansk region bordering Ukraine, and vowed to crush a sabotage group that had fired at civilians.

Ukraine accused Russia of staging a "false provocation".

(With input from Reuters)