"Government authorities and law enforcement agencies are taking measures to strengthen the security of facilities involved in providing air defense and supplying new Russian regions. As a result of timely actions, 27 terrorist attacks at such facilities were prevented. Attempts to penetrate into Russian territory by Ukrainian sabotage and reconnaissance units were stopped," the committee said in a statement.
On March 22, a group of militants stormed the Crocus concert hall in Moscow's suburbs with firearms and explosives. The attack left 144 people dead, including families with children. The perpetrators were detained the next day, and a preliminary investigation revealed that the terrorists had ties with the Ukrainian side.