Article content

Warning: Disturbing images

ST. PETERSBURG, Russia — A bomb blast tore through a subway train in Russia’s second-largest city Monday, killing 10 people and injuring about 40 as President Vladimir Putin was visiting St. Petersburg, authorities said. Hours later, police found an unexploded device in one of the city’s busiest subway stations, sending a wave of anguish and fear through Putin’s hometown.

We apologize, but this video has failed to load.

tap here to see other videos from our team. Try refreshing your browser, or Explosion on St. Petersburg subway kills at least 10, injures 43. Bomb deactivated at second subway stop Back to video

There was no immediate claim of responsibility for the attack. The Interfax news agency said law enforcement agencies were searching for two suspects, and state TV showed a photo of one possible suspect wearing what appeared to be a skullcap characteristic of Muslim regions in the former Soviet Union.

Russia’s top criminal investigative body, the Investigative Committee, said it was investigating the blast as a terrorist attack, but said it was also considering other motives.

We apologize, but this video has failed to load.

tap here to see other videos from our team. Try refreshing your browser, or

The explosion rocked the train as it travelled between stations about 2:20 p.m. The driver chose to continue on to the next station, Technological Institute, a decision praised by the Investigative Committee as aiding evacuation efforts and reducing the danger of more deaths from passengers trying to walk along the subway’s electrified tracks.