A police officer was shot and wounded and two others were injured in the latest clashes in Russia's southern province of Dagestan.
An unidentified gunman shot and wounded a police officer Sunday in the village of Novomekhelta, the regional branch of Russia's Interior Ministry said in a statement. The assailant fled.
In a separate incident Sunday in the eastern Khasavyurt region, near Chechnya, five Chechen men got involved in a brawl with two police officers, injuring them, the ministry said.
The ministry also said that police on Sunday found two caches of weapons and explosives in Dagestan near the border with Chechnya.
In a southern Dagestani district, the bodies of a school principal and his wife were found near a state-run farm near the Ashagastal-Kazmalyar settlement on Sunday. Police found the couple's 26-year-old son with gunshots to the head in their house about two hours later.
Their other 30-year-old son was found stabbed to death on a Makhachkala beach also Sunday, ITAR-Tass reports.