It is reported by RIA Novosti with reference to a representative of emergency services.
“Two private Robinson R44 helicopters did not get in touch at the set time,” the source said.
According to him, the Mi-8 helicopter was involved in the search for the missing aircraft.
Earlier, emergency services reported that one Robinson R44 helicopter flying to the Putoransky Reserve did not get in touch in the Taimyr district of the Krasnoyarsk Territory.