TERROR ATTACK | 11 dead in metro bombing in Russia

No Australians are believed to have been caught up in a deadly metro blast in Russia, which has claimed 11 lives.

Police are searching for two people believed to be behind the bombing of a train and station in St Petersburg.

Authorities are treating it as a terror attack and say the explosives were filled with ball bearings to maximise serious injury and death.


Dozens of people were also injured in the explosions between Sennaya Square and Technology Institute.

Citing law enforcement officials, Interfax said a suicide bomber was responsible for the blast.

The suspected bomber was a 23-year-old from central Asia who had links to radical Islamists, it added.

Following the blast, a second explosive device was found and deactivated at nearby Vosstaniya Square station.

Authorities now suspect they might be looking for a second person.