A military helicopter crashed at an airport in Russia's remote eastern Chukotka region on Tuesday, killing all four people on board, the governor said.
The Russian Defense Ministry helicopter crashed at the main airport in Chukotka near Anadyr, which has mixed military and civilian uses.
"There were three crew members and a technician on board. All four died," wrote Governor Roman Kopin on his Instagram account.
Russian authorities reported that it was a Mi-8 helicopter that underwent a test flight after technical maintenance.
"The cause of the accident could be a technical error on the helicopter," the TASS news agency quoted a statement from the Department of Defense.
Military investigators were sent to the crash site, it said.
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