Search and rescue teams were at the scene of the accident, the Disaster and Emergency Management Authority (AFAD) said in a statement.
Two workers were injured and taken to hospital, state-run news agency Anadolu said.
The energy ministry was quoted by local media as saying that the mine was working without a licence after it was shut down in 2013 because of security risks.
The accident comes more than three years after the country's worst modern industrial disaster -- 301 miners were killed in May 2014 following a fire at the Soma mine in western Turkey.
Disclaimer: No Business Standard Journalist was involved in creation of this content
