A female suicide bomber is believed to be behind an explosion that killed at least 11 people in the Russian region of North Ossetia.
Many more were injured in the blast, described as a terrorist attack by local officials, It happened as passengers were getting off a minibus near the main market in the provincial capital, Vladikavkaz.
North Ossetia is in Russia’s turbulent North Caucasus region where violence has raged for years, much of it blamed on Islamist militants.
Russian President Dmitry Medvedev has ordered police to tighten security and to keep him informed about the investigation.
North Ossetia was also the scene of the Beslan school siege in 2004 in which more than 300 people, many of them children, were killed.