A Russian soldier was killed and two others wounded when a Russian military vehicle was attacked in the Republic of Ingushetia, Interfax reported Sunday. The news agency quoted security sources as saying that unknown militants attacked the vehicle carrying a number of Russian soldiers while it was passing through the republic's capital, Nazran. The sources added that security forces were searching for the vehicle which the militants used. Tensions in Ingushetia, located on the northern slopes of the Caucasus and neighboring Chechnya, had risen over the past three years with increasing activity of extremist militants.