Putin: Subway bombing shows terrorism threat isn't subsiding

Mikhail Klimentyev | TASS | Getty Images

Mikhail Klimentyev | TASS | Getty Images

Russian security agents have arrested three people suspected of links to a suicide bomber accused of attacking the St. Petersburg subway. "They were all confiscated and sent for analysis".

Russia's Investigative Committee says the suspects arrested Thursday are residents of Central Asia like the bomber, 22-year-old Akbarzhon Dzhalilov, a native of Kyrgyzstan.

It did not disclose the nature of the objects confiscated. They also examined CCTV footage from outside Dzhalilov's home which shows him leave home with a bag and a backpack.

There has so far been no claim of responsibility for the attacks, and ISIS media channels have remained fairly quiet, though some Islamic State supporters on Monday did celebrate the attack, claiming it was a response to the country's active support of dictator Bashar Assad in Syria's civil war. One top Russian official initially called it a terrorist attack, but backtracked after Russian President Vladimir Putin said authorities were looking into "all possible causes, terrorism as well as common crime".

The Interfax news agency, citing a law enforcement source, said the men were from Central Asia, where the impoverished, predominantly Muslim states have become a breeding ground for jihadism.

The GKNB service said it was working with Russian law-enforcement officials, who are investigating the incident as an act of terrorism, the Washington Post reported.

Victims' faces were ripped off when the the former sushi chef killed 14 by detonating a bomb on a crowded metro train in theRussian city on Monday.

A Russian citizen of Kyrgyz origin was identified as the perpetrator of the terror attack that left 14 dead on the St Petersburg metro, Russian authorities announced. It was unclear if those detained at the site of Thursday's bomb scare were the suspected accomplices identified by the investigative committee. The explosion tore through a metro auto in a tunnel between the city's Sennaya Ploshchad and Tekhnologicheskiy Institut metro stations Monday afternoon at about 2:30 p.m.

The bomb was detonated on a train between Sennaya Square and Technological Institute, two busy stations in the centre of the city, on Monday afternoon.

Forensic experts found his genetic traces on the bag with a bomb left at Ploshchad Vosstaniya metro station.

"But despite this, Russian Federation is still determined to continue its efforts to combat terrorism", Peskov told reporters.

A woman believed to be Dzhalilov's mother reportedly told a Russian TV reporter that she did not believe her son was the bomber.

More Than 1 in 5 Adults Has Cancer-Causing HPV, CDC Reports
4 killed in Stockholm truck attack described as terrorism