A group of 50 experienced investigators and forensic experts has been set up to investigate a heinous attack in the Chechen capital, Grozny, that killed 10 and wounded 28 police officers.
The view of the Press House in Grozny, where a counter-terrorism operation was conducted by the Chechen Interior Ministry forces.
Russia's Investigative Committee on Thursday opened a criminal investigation over an attack on policemen in the North Caucasus republic of Chechnya, spokesman Vladimir Markin said.