From AP:
A huge explosion blasted apart a subway car packed with morning rush hour commuters Friday, killing 39 people and wounding more than 130 in what some officials said was a suicide attack on the Russian capital’s transport lifeline.
President Vladimir Putin drew a connection between the blast and Chechen rebels whom Russian troops have been fighting for most of the last decade, and said the blast appeared aimed at sowing discord ahead of next month’s presidential elections.
There was no immediate claim of responsibility for the blast, but Chechen insurgents are blamed for a series of suicide bombings in Moscow and elsewhere in Russia. The blast came just three weeks after one of Chechnya’s most feared warlords threatened new attacks in Russia.
You would never know it from this story, but these “Chechen rebels” are jihadists. Here is a recent report on the Chechen jihad from a leader of the movement, Abdallah Shamil Abu-Idris (Shamil Basayev).