At least 10 people are dead after a series of explosions rocked two underground metro stations in St. Petersburg, Russia today.
Russian President Vladimir Putin, who was in the city at the time of the blasts, says all causes are being investigated, including terrorism. Authorities say another 20 people have been injured by flying shrapnel. A similar type of attack occurred in Moscow in 2010, when suicide bombers killed 33 people in two subway stations. (NY Times)