>> Russia's President labeling an explosion at a St. Petersburg supermarket, an act of terrorism. Investigators have opened a criminal case into Wednesday evening's blast, which they said was caused by a homemade bomb packed with pieces of metal. Nobody was killed, but 13 shoppers were injured in the explosion.
Russian media report the bomb was hidden in a locker. Speaking at an award ceremony on Thursday, Vladimir Putin said, security forces should shoot to kill in such situations.>>
>> Putin told the ceremony, the security situation in Russia would be much worse. As thousands of Islamic State fighters who have fought in Syria had been allowed to return home.>>