MOSCOW, July 16 (RIA Novosti) - A police officer was killed and another injured in an attack in Russia's North Caucasus republic of Kabardino Balkaria on Thursday morning, a local police source said.

Unknown attackers in a Lada car opened fire on two police officers who were jogging near the village of Psychokh in the republic's Baskan district.

"A detective officer sustained severe injuries as a result of the attack, and died while being transported to hospital," the spokesman said.

An investigation in underway.

A counter-terrorism operation was launched in Kabardino-Balkaria's Elbrus District in late June.