Russian security services killed an armed militant after gunmen tried to blow up a law-enforcement vehicle in the troubled North Caucasus, police officials said Friday. No one was injured in the explosion that hit the car belonging to the regional division of the Federal Security Service, or FSB, Thursday evening in a village outside Nalchik, capital of the Kabardino-Balkaria region near Chechnya. A gunbattle broke out several hours later when a group of around five gunmen started firing on police and security forces who had cordoned off the village, Khasanya, detaining people and questioning suspects, the regional Interior Ministry said.