Another deadly bombing in Volgograd:  At least 10 people have been killed and 10 others injured in an explosion Monday morning on a trolleybus in the southern Russian city.  It came a day after at least 16 people were killed in a suicide bombing at the city’s main train station.

The latest explosion took place near a market in the city's Dzerzhinsky district on Monday morning.  Footage from Russian television shows the bus gutted, charred, and skeletonized.  The center of the blast appears to be the rear half of the vehicle.  Some nearby buildings were damaged in the blast, and people took photos through shattered windows.

It’s the third terrorist bombing in Russia in the last few days.  On Sunday, a suicide bomber approached the metal detectors at Volgograd Station and detonated a device, killing at least 16 people, including women and children.  A police officer reportedly died trying to shield others.  On Friday, a car bomb killed three people in the city of Pyatigorsk.

The city once called Stalingrad is close to Chechnya and Dagestan, where Islamic separatists have called for the disruption of the 2014 Winter Olympics to take place in Sochi, Russia.