Two walkers have been air-lifted off a mountain in the Brecon Beacons in separate incidents.
HM Coastguard were called to rescue a female walker who had suffered a head injury after falling on Pen y Fan.
However the helicopter from St Athan, Vale of Glamorgan, had to be diverted following reports of a male walker unconscious on the same mountain.
Both casualties were taken to University Hospital of Wales in Cardiff.
Western Beacons, Central Beacons and Brecon Mountain Rescue teams said it was also in attendance.
A spokesman added: "The initial incident was a gentleman suffering with breathing difficulties, a medical emergency requiring immediate attention.
"As the teams mobilised a second incident was reported, a female who had fallen and suffered head injuries."Both casualties were air lifted from the hill and taken to hospital for further medical attention."