An official day of mourning has begun in Moscow, as the city reels from twin bombings that killed dozens on their way to work.
Vigils for the nearly 40 victims blown up on packed metro trains on Monday morning come as grief increasingly turns to anger.
Female suicide bombers are believed to be behind the attacks which Russia says were planned
by Muslim rebels from the North Caucasus.
President Dmitry Medvedev denounced those responsible as “beasts”, vowing they would be found and destroyed.
There was similarly strong language from the Russian Prime Minister who visited survivors. Some see the blasts as a personal challenge to Vladimir Putin who built his popularity on a military campaign against Chechen rebels.
Moscow’s worst attack in six years brought carnage to Monday morning’s rush hour. In the space of around 40 minutes, explosions ripped through two metro trains at separate city centre stations.
Videos shot on passengers’ mobile phones helped capture the horror as at least 38 people were killed and more than 60 others injured.
This is not the first time that terror has struck Moscow’s metro system. But the Kremlin had declared victory in its battle with Chechen separatists and Muscovites hoped such deadly attacks in the Russian capital were a thing of the past.
The bombings were condemned around the world.
President Barack Obama called his Russian counterpart to offer personal condolences. He said the US was ready to cooperate in bringing those behind the blasts to justice.