Two deadly bomb attacks in Southern Russia

Russian firefighters and security personnel inspect a destroyed trolleybus in Volgograd, Russia, Dec. 30, 2013.

Ten people were killed in a bombing that destroyed a packed trolleybus in the southern Russian city of Volgograd, the second attack in the city in two days after a suicide strike on its main train station, officials said.

Volgograd

Investigators work at the site of an explosion at the entrance to a train station in Volgograd, Dec. 29, 2013.

A female suicide bomber blew herself up in the entrance hall of the Russian train station on Sunday, killing at least 13 people in the deadly attack.

Volgograd

A man grieves outside the Volgograd main railway station, as passengers from arriving trains leave, Dec. 30, 2013.

Volgograd

Police officers with a sniffing dog examine territory around the site of a trolleybus explosion in Volgograd, Dec. 30, 2013.

Volgograd

Experts, firefighters and police officers examine the site of a trolleybus explosion in Volgograd, Dec. 30, 2013.

Volgograd

Investigators work near the body of a victim after an explosion outside a train station in Volgograd, Dec. 29, 2013.

Volgograd

A covered body lies on the ground as Russian security personnel inspect the scene of a suicide attack at a train station in Volgograd, about 900, Dec. 29, 2013.

Volgograd

Police officers detain people who gathered for an unsanctioned event in downtown Volgograd, Dec. 30, 2013.

Volgograd

A Volgograd resident walks crying, Dec. 30, 2013.

Volgograd

Russian security forces stand guard outside a train station following a suicide attack in Volgograd, Dec. 29, 2013.

Volgograd

Dead bodies lie at the scene where a destroyed trolleybus stands on a street in Volgograd, Dec. 30, 2013.

Volgograd

Experts and police officers examine a site of a trolleybus explosion in Volgograd, Dec. 30, 2013.

Volgograd

Investigators work near the body of a victim after an explosion outside a train station in Volgograd, Dec. 29, 2013.

Volgograd

Women enter the Volgograd main railway station, Dec. 30, 2013.

Volgograd

Investigators and Emergency Ministry members work at the site of an explosion at the entrance to a train station in Volgograd, Dec. 29, 2013.

Volgograd

Members of the Interior Ministry stand guard in front of the train station where a bomber detonated explosives in Volgograd, Dec. 29, 2013.