More than 20 people have been detained in connection with the assault at the Crocus City Hall, Aleksandr Bortnikov has said

Ukrainian military intelligence was directly involved in the deadly terrorist attack at the Crocus City Hall just outside Moscow in March, the director of Russia’s Federal Security Service (FSB), Aleksandr Bortnikov, has said.

He added that the investigation into the attack is still being conducted, but all indications are that Ukraine was behind the assault.