Aleksandr Bortnikov, the head of Russia's FSB security service, has said that terrorists are seeking "access to nuclear, chemical, and biological components" across the former Soviet Union.
Bortnikov gave no further details about the attempts or which groups had sought the materials.
But he added that militants intended to sabotage the Winter Olympics that are slated to be held in the Russian Black Sea resort of Sochi in 2014, according to AFP.
Bortnikov made the remarks at a press conference in the Russian city of Yekaterinburg after a gathering of security officials from former Soviet republics in the Commonwelath of Independent States (CIS).
compiled from agency reports