One woman died and three others were injured when unidentified gunmen opened fire on a police officer's residence in Russia's turbulent North Caucasus region of Ingushetia, news agencies reported on Sunday.
Attackers opened fire at the house of Bei-Ali Ekazhev, chief of a special-task police unit, late on Saturday in central Ingushetia, and fled the scene, the RIA Novosti reported citing investigators.
The attack has left Ekazhev's sister killed, his wife and daughter severely wounded and Ekazhev himself slightly injured, said the investigators, Xinhua reported.
A criminal investigation has been launched into the attack.
Meanwhile, in another restive North Caucasus republic of Chechnya, a 28-year-old armed man identified as Adam Merzhoyev fired at two police officers on Saturday night when his car was being checked, said the Itar-Tass.
One of the two police officers died later of wounds. Merzhoyev was killed by return fire.
The Kremlin in April formally ended anti-terrorist operations in Chechnya, which has experienced two bloody wars in the past 15 years. The North Caucasus republics of Chechnya, Ingushetia and Dagestan have seen a rise in daily violence in recent months.
The leader of Ingushetia, Yunus-bek Yevkurov, was injured in an assassination attempt last month.