Four servicemen were killed and seven wounded by rebels in Ingushetia on Monday, an official said.
Militants ambushed an Interior Ministry convoy Monday in the region's mountain forests close to the border with Chechnya, said Madina Khadziyeva, a spokeswoman for the ministry's branch in Ingushetia.
She said the attack occurred near the village of Dattykh, but gave no further details.
Ingushetia recently had been less volatile than some of the neighboring regions in the North Caucasus, so the casualty toll in Monday's attack was unusually high.