Police are looking for two people believed to be behind the deadly attack in the metro in St. Petersburg, Russia, who planted a total of two bombs, one of which exploded, last night.
Eleven people were killed in the blast on the St. Petersburg metro, in what authorities described as a terrorist attack.
An explosion tore through a train as it was traveling between two stations in Russia's second‑biggest city, injuring dozens more.
A security camera spotted a man who may have left the deadly bomb in a bag on the train.
A second device was found and defused at another station.
No group has claimed responsibility for the attack, which led to the shutdown of the city's metro system.
President Vladimir Putin, who had been in St. Petersburg earlier in the day, said all causes were being investigated, including terrorism.
