Unidentified attackers fired on a police post in Ingushetia late on Monday, and preliminary reports said there had been casualties, the republic's Interior Ministry told Itar-Tass. The police post on federal highway "Kavkaz" in Nazran's Nasyr-Kortovsky municipal district came under automatic and grenade-launcher fire. The shelling began at 23:30 and ended at 23:38, Moscow time. The republic's law-enforcement bodies have launched an operation to detain and neutralize the attackers.