epa04003762 A handout photograph released by the Volgograd regional Interior Ministry department’s press service shows the wreckage of a trolleybus after an attack by a suicide bomber in Volgograd, Russia, 30 December 2013. Reports state that at least 14 people were killed and 28 wounded in the bombing, which investigators said bore a similar signature to attacks on 29 December 2013 and in late October 2013 in the city. EPA/INTERIOR MINISTRY PRESS SERVICE ATTENTION EDITORS PICTURE CONTAINS GRAPHIC CONTENT