Putin: Govt considering all causes, including terrorism for blast

Surveillance cameras in St Petersburg's metro system may have captured images of the person suspected of organising the blast.

FILE: Vladimir Putin. Picture: AFP.

MOSCOW - Russian President Vladimir Putin said on Monday the government was considering all possible causes for the blasts in St Petersburg's metro system, including terrorism.

"I have already spoken to the head of our special services, they are working to ascertain the cause (of the blasts)," Putin, at a meeting with Belarus President Alexander Lukashenko, said.

"The causes are not clear, it's too early. We will look at all possible causes, terrorism as well as common crime," he added.

At the same time, surveillance cameras in St Petersburg's metro system may have captured images of the person suspected of organising the deadly train blast, Russian news agency Interfax quoted a source as saying.

"Images of the suspected organiser of the metro blast were captured on metro station cameras," the source said.

The explosive device may have been left in a briefcase in a metro train carriage, the source added.

Meanwhile, Russian security agencies found an explosive device at a metro station in central St Petersburg and made it safe, the National Anti-Terrorist Committee said in a statement.

The device was found at the "Ploshchad Vosstaniya" metro station, a different location from where a blast earlier took place.

The committee also said that at least nine people were killed and 20 injured in the blast, which took place as a train travelled between the "Sennaya Ploshchad" and "Tekhnologichesky Institut" stations.