A nail bomb placed onto a train by a suspected terrorist has ripped through a carriage inSt Petersburg killing at least 12 people and injuring 50 more today.
The terrifying incident, which is being investigated as a terror attack by officials who say the killer has been captured on CCTV, took place on a train that was travelling between Sennaya Ploshchad and Sadovaya metro stations.
The attack has left dozens injured, including children, after it was reported a man left a briefcase on the train before moving carriages moments before the deadly blast and a second explosive device was found and defused in a nearby station.
Vladimir Putin is in his hometown of St Petersburg today for talks with the president of Belarus and has confirmed 'there are dead and injured' and offered his condolences to the families of those killed.
The Kremlin leader, who wanted to visit the scene in the aftermath of the attack but was held back by security services, said: 'I have already spoken to the head of our special services, they are working to ascertain the cause of the blasts.
'The causes are not clear, it's too early. We will look at all possible causes, terrorism as well as common crime.'