"The law enforcement agencies and security forces are working and will do everything in their power to unearth the reasons of what happened, to assess what happened," Putin said.
The Russian authorities will take all necessary measures to provide assistance to those injured in blasts in the St. Petersburg subway, Russian President Vladimir Putin said.
"The city authorities, and, if required, the federal authorities, will take all necessary measures to support the families of those killed and those injured," Putin said.
Vladimir Putin has discussed the situation in the St.Petersburg metro station with the FSB director.
An explosion occurred at the St Petersburg metro at 14-30 local time. The reported blast occurred at the "Sennaya Ploschad [square]" and "Tekhnologichesky Institute" stations.
As a result at least 9 people were killed and 20 injured. Children are among the victims.
