At least 35 people were killed and about 60 injured in a suicide attack at Moscow's largest, and Russia's busiest, airport on Monday.
The terrorist set off a powerful bomb in a crowd near a cafe in the arrival section of the Domodedovo airport at 1632 Moscow time (1902 IST), sources in the transport police were quoted as saying.
The place is rather congested and is typically packed to capacity by people meeting their friends and relatives. The smoke that filled the room was making it difficult to establish the exact number of casualties, the sources said.
President Dmitry Medvedev cancelled a trip to an economic forum in Davos, Switzerland. He told security chiefs at an emergency meeting at the Kremlin to tighten security at all airports and rail stations.
Russia's Investigative Committee confirmed that it was a terrorist attack that was probably linked to Russia's troubled North Caucasus. Experts said the bomb, packed with bolts for a deadlier effect, was equivalent to 10 kg of TNT.
Scores of ambulances have been rushed from nearby towns and Moscow about 40 km away. Medical authorities said 58 wounded people were hospitalised, and at least 20 of them were in a grave condition.
Flights redirected
Several incoming flights were redirected to other airports, but later Domodedovo resumed receiving and dispatching flights as normal, the airport's press service said.
This is the first terrorist attack in Moscow after the March 2010 double suicide bombing in the metro, staged by North Caucasus terrorists, that killed 40 people.