UN Security Council condemns terrorist attack in St. Petersburg, Russia

President Putin was in St. Petersburg before explosion.

The statement provided no further information about the reinforced security, and Fekl's office did not immediately respond to requests for comment.

And extremists have targeted Russia's public transportation systems in the past.

About three million people use the St Petersburg underground every day. Anti-terror authorities had earlier reported a death toll of 11. Interfax news agency cited unnamed sources as saying the bomb, packed with shrapnel, may have been hidden in a train carriage inside a briefcase. It didn't explain why the man was believed to be the culprit.

A second device was found at another metro station - Revolutionary Square - and was disabled, the committee said in statement.

Media reports said two stations still remain closed, namely: Sennaya Ploschad and Technologichesky Institute stations.

The National Anti-Terrorism Committee in Moscow says at least 9 people are dead and 20 others have been injured in this blast.

Russia's National Anti-Terrorist Committee said an unidentified explosive device went off on a train that was traveling between two stations.

"Despite the fact that the criminal case has been launched under Article 205 of the Russian Criminal Code (terrorist act), the investigators will probe other potential causes of the incident", IC's spokeswoman Svetlana Petrenko said.

"Law enforcement bodies and special services are working and will do all they can in order to find out the cause of what's happened, to give full assessment of what's happened", Putin said.

Putin happened to in St. Petersburg for a meeting with Belarusian leader Alexander Lukashenko.

The attacks come at a time of domestic political upheaval is Russia, as anti-corruption demonstrations have been held across Moscow and dozens of other cities over the past two weeks, with thousands of Russians taking to the streets to protest against corruption.

In Moscow, Deputy Mayor Maxim Liksutov told the Interfax news agency that Moscow authorities are tightening security on the subway in the Russian capital. Commuters were evacuated from the subway within about an hour of the first reports of the blast coming in.

Video posted on social media showed rescue workers rushing to the scene.

Russian Federation was once a hotspot for terror attacks but the country has experienced relatively few in recent years.

An injured person stands outside Sennaya Ploshchad metro station in St Petersburg, Russia, after an explosion.

Witnesses said they saw passengers who were bloodied and burned spilling out of the train, whose door was buckled by the force of the explosion, and lying on a platform while smoke filled the station. "Absolutely a awful thing", Efe news quoted Trump as saying.

  • Leroy Wright