'Suicide bomber' hits Russia's Volgograd train station
29 December 2013 Last updated at 11:33 GMT
An explosion has ripped through a train station in the southern Russian city of Volgograd after reports that a suicide bomber blew herself up.
At least 16 people have been killed and many more are injured. In a statement, the Russian anti-terrorism authorities say the bomber was a woman.
In October, a female suicide bomber from the neighbouring restive province of Dagestan killed six people on a bus in the city.
Daniel Sandford reports.