MAKHACHKALA, Russia, May 25, SPA -- Police say two senior officershave been killed in separate shootings in Russia's NorthCaucasus region. A bystander was also killed, the Associated Press reported. The slayings underscore persistent violence in the regionyears after the end of major fighting between governmentforces and separatists in Chechnya. Police are oftentargeted.--SPA www.spa.gov.sa/559017