MOSCOW, Jan. 15 (Xinhua) -- Russian police killed four militants in an operation in Grozny, capital of its Caucasus republic Chechnya, Itar-Tass news agency reported on Tuesday.
Officers of the Interior Ministry and the Federal Security Service surrounded an apartment in Grozny Monday night and exchanged fire with four gunmen in it, a police source was quoted as saying.
Among the killed were three men and one woman, local police said.
A number of weapons and ammunition were also seized on spot, including several grenade launchers, submachine guns, one pistol with a silencer and hundreds of bullets, the report said.
"It was a rebel group operating in Grozny that was involved in the killing of police officers," Chechen Interior Minister Ruslan Alkhanov told local television.
One police officer was wounded during the operation, Alkhanov said.
Russia launched two wars to fight against Chechen militants that were seeking independence and carried out terrorist activities in the country.