Pope prays for victims and families of Russian Federation bomb attack

The DNA evidence, as well as closed-circuit television footage, led investigators to believe that Dzhalilov had blown himself up and had wanted to bomb the Vosstaniya Square station, the statement said. The foreign ministry of the Central Asian nation of Kazakhstan said one of its citizens had been killed in the attack.

Investigators have not said whether the six had any links to Monday's attack, which authorities said was carried out by a Russian citizen of Kyrgyz origin, identified as Akbarzhon Jalilov.

The building's residents had been evacuated before explosives experts went in to check the site.

"Objects relevant to the investigation were found during the search of the apartment where these people lived", the investigative committee probing the bombing said.

The blast took place in a train carriage in the tunnel between two metro stations in St. Petersburg, Russia's second largest city, killing at least 14 people and wounding dozens.

A police officer with her police dog secures an area at Tekhnologichesky Institute subway station in St. Petersburg, Russia on Tuesday.

Earlier, six suspected Islamic State (IS, formerly ISIS/ISIL) and Al-Nusra Front recruiters, who reportedly originate from Central Asian countries, were detained in St. Petersburg. Officials in Kazakhstan said they were co-operating with Russian authorities, although it was not clear if there was an additional suspect from that country. While most Central Asian migrants in Russia have work permits or work illegally, thousands of them have received Russian citizenship in the past decades.

In a separate report, the Fontanka.ru agency said Dzhalilov had traveled to Syria in 2014 and trained with Islamic State militants.

Monday's explosion occurred as the train travelled between stations on one of the city's north-south lines.

The majority of the victims and survivors are locals from St. Petersburg, including the now-deceased 25-year-old Denis Petrov, who was an army hand-to-hand combat champion and a St. Petersburg kickboxing champion.

President Donald Trump called President Vladimir Putin late Monday to express his condolences, Kremlin spokesman Dmitri Peskov said, but the conversation was limited to expressions of support. 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.

  • Leroy Wright