Earlier in the day, Kyrgyz officials were only telling us that they believed that it was someone who was born in Kyrgyzstan who had acquired Russian citizenship, and the phrase suicide bomber was not even being used.
The Investigative Committee, Russia's top investigative agency, said it also found Dzhalilov's DNA on a bag with a similar bomb that was found and deactivated at another subway station shortly after the blast.
Six Central Asian nationals were detained Wednesday in St. Petersburg, Russia, on suspicion of facilitating terrorist activities and recruiting their compatriots for terrorist groups, Russian authorities said.
Officials fear that the predominantly Muslim Central Asian states, which once formed part of the Soviet Union, are becoming prime recruiting grounds for terrorist organizations.
The chief of the Saint Petersburg metro, Vladimir Garyugin, said Tuesday that quick actions by staff prevented a much higher toll and that passengers had helped each other instead of panicking.
The Monday blast occurred as a subway train was between stops. The bomb was detonated inside the train as it travelled between two stations in the centre of Russia's second-largest city.
On the afternoon of April 3, a bomb exploded in a metro vehicle between Tekhnologichesky Institut station and Sennaya Ploshchad stations in St. Petersburg.
An explosive device was disarmed and several people arrested as police conducted a search of a Saint Petersburg apartment building in connection with Monday's metro bombing, Russian media reported Thursday. Jalilov had lived in Russia for several years and was a Russian citizen.
The entire subway was shut down and evacuated, paralyzing traffic in the city of 5 million before partial service resumed six hours later.
The bomb went off Monday afternoon as the train was moving between two stations.
(AP Photo/Dmitri Lovetsky). CLARIFIES THE EVENTS ABOUT THE DEATH OF THE CHILD Anna Borovikova holds a portrait of her sister Irina Medyantseva, one of the victims of the subway explosion, during a prayer event in a church in St. Petersburg, Russia, Wed.
"I travelled on the same route this morning just to see how it felt and think about life".
"Naturally, we always consider all options - both domestic and criminal, primarily incidents of a terrorist nature", Putin said.
Patriach Kirill, head of the Russian Orthodox Church, led a service at Moscow's main cathedral on Tuesday for those killed in the blast.
No one has claimed responsibility for the bombing, but Russian trains and planes have often been targeted by Islamist militants.
People from Kyrgyzstan and other Central Asian former Soviet republics are common sites in St. Petersburg, home to a large diaspora of migrants who flee poverty and unemployment in their home countries for jobs in Russian Federation.
Twenty-five-year-old Denis Romanovich Petrov, a Russian hand-to-hand combat champion - a Russian martial art that has its origins in the Soviet Armed Forces - was killed when an explosion ripped through a train on the city's metro. Alexander Zhilkin, governor of this region hundreds of miles away from the insurgency in the North Caucasus, said the suspected Islamists are on the run.