Russian National Anti-Terrorist Committee

Russians announce their retaliation: Total destruction. They will blow up...

Medvedev said that world and Russian experience shows that it is impossible to fight terrorists with sanctions, intimidation or concessions.
"They understand only the language of force. Only personal and completely inhumane methods," Medvedev wrote on Telegram.
He says that it is necessary to blow up the houses of terrorists and their relatives.

Blast in St Petersburg metro station kills at least 9, injures 20

At least nine people were killed and 20 injured when an explosion tore through a train carriage in the St. Petersburg metro system on April 3, the Russian National Anti-Terrorist Committee said, according to Reuters. 

Interfax news agency quoted an unnamed source as saying the blast, which occurred when the train was between two stations, was caused by a bomb filled with shrapnel.