MOSCOW, March 13. /TASS/. Chief of Russia’s Investigative Committee Alexander Bastrykin has ordered to investigate the circumstance of the mass execution of civilians in the Lugansk People’s Republic (LPR), the Committee’s press service said on Sunday.

"The Investigative Committee chairman has ordered investigators to collect evidence and identify all those involved in it in order to bring them to responsibility under law," it said.

According to earlier reports, during an offensive in the Popasnaya direction LPR forces came across a site of mass execution of civilians near a railway. According to the PLR People’s Militia, retreating Ukrainian troops used people as a human shield and shot dead anyone offering resistance or trying to escape.