Russian security agency says it foiled IS attack

Four people have been arrested on suspicion of plotting attacks on Moscow transit system and shopping malls, the Federal Security Service, or FSB, said in a statement.

Those arrested included two would-be suicide bombers along with an Islamic State envoy and an expert in explosives. One of them is a Russian national and three others are from ex-Soviet Central Asia, the FSB said. The agency released a video in which its agents inspect a house used by the group to make explosives while two suspects lie down on the floor in handcuffs.