A native of Kyrgyzstan who had a Russian passport was responsible for the deadly blast in St. Petersburg, the Kyrgyz and Russian authorities said on Tuesday, as the toll from the attack rose to 14 dead and more than 60 injured.
The Investigative Committee of Russia, the main federal law enforcement agency, released a statement saying that the man who detonated the bomb on a subway car was Akbarzhon Dzhalilov, 22.
Forensic experts also found his DNA on a bag left at the Vosstaniya Square metro station, the statement said.
A more powerful bomb was discovered there and defused soon after the explosion that occurred on Monday just as a train departed another station, Sennaya Square.
The genetic link as well as CCTV footage led investigators to believe that Mr. Dzhalilov had blown himself up and wanted to bomb the other station, the statement said.