The latest clashes have left 11 police officers injured in Chechnya, officials said Monday.
In one attack late Sunday, several unidentified gunmen fired automatic weapons at a police patrol vehicle in the provincial capital, Grozny, wounding all five officers inside, Chechnya's branch of Russia's Interior Ministry said in a statement. The officers were hospitalized.
The attackers fled, the statement said.
Early Monday, a local officer was injured when an unidentified attacker fired a grenade launcher at his car in Grozny.
Two more officers were wounded in a land mine explosion in the city Monday. And three policemen were wounded in a rebel ambush in the southern Shali region Monday, the provincial Interior Ministry said.
A Russian army soldier was wounded in a bombing in the southern Shatoi region Sunday, it said.
Chechnya, devastated by more than a decade of separatist fighting, remains plagued by violence. Large-scale battles ended years ago, but separatists continue to stage hit-and-run raids on federal troops and forces of the Moscow-backed regional government.
Russian President Vladimir Putin and German Chancellor Angela Merkel had had a few fights and used strong language because of the Ukrainian crisis in 2014