At least 15 killed in bus blast in Russian city of Volgograd AT LEAST 15 people - including a one-year-old child - have been killed in an explosion on a trolley bus in Volgograd, the second fatal attack on the southern Russian city within 24 hours. The blast comes just a day after a female suicide bomber killed 10 people and injured dozens at a train station in the southern Russian city. The attack come 40 days before Russia is to hold the Winter Olympics in the Black Sea resort city of Sochi.