London 4 April 2017: At least 14 people have been killed in explosions at underground stations in St Petersburg, Russian media report. Around 50 have been injured.
News agencies reported the blasts hit the Sennaya Ploschad and nearby Tekhnologichesky Institut stations in the centre of the city.
Russian President Vladimir Putin visited the site and laid flowers. He vowed to find and punish the perpetrators.
Russia has declared a three-day mourning period.
Images posted on social media showed a carriage in Sennaya station with its doors blown out with casualties nearby.
President Vladimir Putin said all causes, including terrorism, were being investigated.
– By Sheena Amos