March 29, 2010 - 14:20 AMT
FSB: suicide bombers blamed for Moscow subway blasts
At least one of the two blasts which killed over 30 people in the central Moscow metro system on Monday morning is blamed on a female suicide bomber using plastic explosives, Russia's top investigator said.

The first attack took place at 7:52 a.m. (04:52 GMT) at the Lubyanka station, located a short distance from the headquarters of the Federal Security Service (FSB), and killed at least 23 people, with another 39 injured. The second blast detonated some 40 minutes later at the nearby Park Kultury station, within walking distance of the Kremlin. At least 12 people lost their lives and 23 were injured.

The second attack has been carried out by a "dark-haired woman" and that "fragments of her body" found at the scene suggested she had had the equivalent of 1.5 kg of TNT strapped to her waist.

A police source said earlier that "an inspection of the scene indicates that the bomb was detonated at a height of 100-200 cm and was apparently attached to the waist of a female suicide bomber."

Police with sniffer dogs are carrying out inspections of other stations as the capital remains on high alert. Security has been tightened at Moscow's overland train terminals and airports, RIA Novosti reported.