The death toll from an attack in the Moscow region on Friday has risen to at least 60, state news agency TASS reported on Saturday citing the Russian Investigative Committee. The terrorist militia Islamic State has claimed responsibility for the attack, the IS mouthpiece Amaq Agency reported, citing unnamed sources. Unidentified men wearing camouflage clothing stormed the Crocus City Hall on Friday shortly before the start of a concert in the city of Krasnogorsk, north-west of Moscow, and opened fire, the Russian Prosecutor General’s Office said. The death toll may rise further, the Russian st…