At least 10 people were killed when an explosion ripped through a trolleybus in the second deadly blast in the Russian city of Volgograd in two days.
MOSCOW — An explosion on a trolleybus in the city of Volgograd left 10 people dead Monday, a day after a suicide bombing that killed at least 17 at the city’s main railway.
The explosions put the city on edge and highlighted the terrorist threat that Russia is facing as it prepares to host the Winter Games in February. Volgograd is about 400 miles northeast of Sochi, where the Olympics are to be held.
Volvograd is about 400 miles north of Sochi, where the Winter Olympics will be held in February.
The National Anti-Terrorism Committee said the bus explosion was most likely caused by a bomb, but there were no further details.
Emergency services personnel work at the site of a trolleybus blast in Volgograd.
There was no immediate claim of responsibility for either explosion, which came several months after Chechen rebel leader Doku Umarov called for new attacks against civilian targets in Russia, including the Sochi Games.
Police with a sniffing dog examine around the trolleybus explosion site.
Suicide bombings have rocked Russia for years, but most have been in the North Caucasus region, the center of an insurgency seeking an Islamist state in the region. But Volgograd, formerly known as Stalingrad, has been struck three times in two months — suggesting militants may be using the transportation hub as a renewed way of showing their reach outside their restive region.
A suicide bus bombing in Volgograd in October killed six people.
Chechen rebel leader Doku Umarov has called for attacks against civilian targets in Russian.
In the railroad station blast, the bomber detonated explosives in front of a metal detector just beyond the station’s main entrance when a police sergeant became suspicious and rushed forward to check ID, officials said. The officer was killed by the blast, and several other policemen were wounded.
No one has claimed responsibility for the explosion, which is the third in two months.