Male suicide bomber believed behind Russian trolleybus blast

Russian investigators said they believe a male suicide bomber carried out an attack that killed at least 14 people on a trolleybus in the southern city of Volgograd on Monday.

"It is now possible to preliminarily say that the explosive device was set off by a suicide bomber - a man whose body fragments have been collected and sent for genetic testing," the federal Investigative Committee said in a statement. (Reuters)