**At least seven people have been killed in a bomb attack at a police station in southern Russia, media reports say.**Many others were injured in the suspected suicide bombing in Nazran, the main city in the Russian republic of Ingushetia.
It is reported to have occurred as staff gathered in a courtyard.
Ingushetia, which borders Chechnya, has recently been rocked by shootings, bombings and other attacks on police and government officials.