Russia's top security official says authorities have detained four men from the North Caucasus who allegedly were planning a "large terrorist attack" in or near Moscow.
Federal Security Service (FSB) director Aleksandr Bortnikov told President Dmitry Medvedev in televised comments that the FSB averted a terrorist attack "literally several days ago."
Bortnikov said the suspects had planned to target "crowded facilities and transport infrastructure," and that security officers had confiscated homemade bombs, other weapons, and a map with a plan for the alleged attack.
Insurgent leader Doku Umarov claimed responsibility for a suicide bombing that killed 37 people at Moscow's busiestairport, Domodedovo, in January as well as twin bombings on the Moscow metro that killed 40 in March 2010.
compiled from agency reports