A man and woman have been killed in an underground mine explosion in western New South Wales.
Emergency services were called to the mine on Endeavour Mine Road at Cobar, about 450km east of Broken Hill, about 3.45am, after reports two people had been critically injured in a workplace incident.
Officers were told a man had died in the underground explosion.
Two women were brought to the surface, however, one has since died.
The second woman has now been airlifted to hospital suffering hearing damage and shock.
Emergency services remain at the scene.
Police will prepare a report for the Coroner and assist SafeWork NSW in its investigation.