The leader of a Chechnya guerilla group has threatened Moscow in a video message posted on the internet over Russia's claim on North Caucasus territories.
The threat was made in a message by Doku Umarov -- dubbed as Russia's Bin Laden -- posted on the kavkazcenter.com website, DPA reported on Sunday.
"We have to carry out our operations in order to wake you up. If this is not enough for you, then God willing, other blows will follow. I can tell you with 100 percent confidence, if God is with us then this year will be a year of blood and tears for you," Reuters quoted Umarov as saying.
However, He made no direct mention of Moscow's Domododevo airport bombing which killed more than 36 people and injured more than 180 others last month.
The threat of further attacks comes at a time when Russia is gearing up for the 2012 presidential election.
Russian opposition leader Mikhail Kasyanov has already warned that if the Kremlin does not open Russia's political system for the next election, the country will suffer the same fate of Egypt and Tunisia.
One decade ago, Russian forces drove separatists out of Chechnya in the second of two wars. The North Caucasus region -- which includes the Muslim-dominated areas of Ingushetia, Chechnya and Dagestan -- has been hit by violence since.