Five people -- including three Russian firefighters -- were killed when their firefighting helicopter crashed in the Koycegiz district of the southwestern Turkish province of Mugla.
The Russian helicopter had been rented for fighting wildfires and was being operated by Turkish and Russian crew members.
Turkey's Forestry and Water Ministry says the helicopter crashed as it was flying into a deep valley while trying to douse the flames of a forest fire near the village of Karacam.
There were no survivors.
Based on reporting by Reuters and the Dogan news agency