The likely suspect in a deadly blast in the Russian city of St. Petersburg is a Kyrgyz-born Russian citizen, Kyrgyzstan's security service said on Tuesday.
The security service identified the suspect as Akbarzhon Jalilov, who was born in 1993 in Osh, the country's second-largest city.
A spokesman for the GKNB security service said it had received an official request from Russian security services to identify the suspect.
Kyrgyzstan, a predominantly Muslim Central Asian nation of six million, is Russia's close political ally and hosts a Russian military airbase.
On Monday, a law-enforcement source told Interfax that authorities had established the identity of the suspected suicide bomber and that the suspect was a 23-year-old from central Asia who had carried an explosive device into the St Petersburg metro in a rucksack.
A man who was captured on surveillance cameras and earlier suspected of a role in the blast came forward to police and said that he played no role, Interfax reported.
Russia's state investigative committee said it had opened a criminal case over the bombing on charges of a terrorist act. The agency, which has sweeping powers, said it had sent a group of investigators to St. Petersburg, adding it would consider other possible causes of the incident besides terrorism.
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