A military helicopter crashed in central Russia's Saratov region Tuesday, killing a pilot and prompting the air force to ground all Mi-8 choppers.
The two others on board escaped unharmed in the crash, which occurred during a routine training flight, according to investigators. Regional emergency authorities said flight recorders have been found, reported Xinhua.
The cause of the accident is yet to be found. Investigators said they have opened a criminal case.
Air Force Commander Victor Bondarev ordered to ground all Mi-8 helicopters until the cause is determined.
