St Petersburg - Russian investigators have identified a 22-year old Kyrgyz-born man as the suicide bomber in Monday's blast on the subway.
The Investigative Committee said in a statement on Tuesday that they believed Akbardzhon Dzhalilov set off a bomb on a train that killed 14 people and wounded dozens. It was unclear if the figure of 14 included the bomber.
The investigators also said that forensic experts found Dzhalilov's DNA on a bag containing a bomb that was found and deactivated at another subway station in St Petersburg on Monday.
German Chancellor Angela Merkel and French President Francois Hollande discussed with Russian President Vladimir Putin ways to boost anti-terrorism co-operation in the aftermath of the St Petersburg subway bombing.
Counter terrorism
The Kremlin on Tuesday published summaries of Putin's phone calls with Merkel and Hollande as well as with Turkish President Recep Tayyip Erdogan who also called Putin on Tuesday to offer his condolences for the attack that claimed 14 lives and injured dozens.
The Kremlin said Merkel, Hollande and Putin "stressed the need to intensify co-operation to counter terrorism which is a common threat for all nations" and agreed to improve intelligence sharing.
The St Petersburg City Hall said there were several foreign nationals among those killed and 49 injured but it would not give details.
Meanwhile Russian news agencies said all St Petersburg subway stations had now been reopened.
