Russian authorities: Terrorist bombing at Moscow airport kills 35

Moscow (CNN) -- Terrorists detonated a bomb at Moscow's busiest airport on Monday, killing 35 people and wounding 152, Russian authorities said.

President Dmitry Medvedev, who called the bombing a terrorist attack, ordered additional security at airports and transportation hubs around the country, and Moscow police went on high alert in case of additional bombs.

The explosion occurred about 4:30 p.m. at the entrance of the international arrivals section of Domodedovo Airport, Itar-Tass said, citing a spokeswoman for the Russian Investigative Committee, Tatyana Morozova.

State TV aired video of the smoke-filled terminal, including what appeared to be bodies and luggage on the ground.

The Russian National Anti-Terrorist Committee said 35 people were dead and 152 had been wounded in the explosion.

State TV, citing Russian authorities, said the bombing was the act of a suicide bomber who stuffed a homemade bomb with small metal objects to make it more deadly, then activated it in a crowded area where many people were waiting for arriving passengers. CNN could not independently verify those claims.

A heavy police presence remained outside the airport nearly four hours after the explosion, and more than 10 ambulances left the airport with lights flashing and sirens screeching.

Incoming flights scheduled to land at Domodedovo were being diverted to Moscow's other airports, Sheremetyevo and Vnukovo, Russian TV said.

However, airport spokeswoman Yelena Galanova told Russian state TV that the airport was "operating as usual."

"There have been no departure delays. We were shut for only about 20 minutes after the explosion," she told state TV. Continue ►