A man has died after he became ill on the Maamturk mountain range in Conamara in Co Galway, while taking part in an adventure race.
In a statement, Gaelforce Events said that "at 12:21 race control was notified that a competitor (of Gaelforce West) had become ill on the final section of the race route."
According to the statement "the event marshals responded to the scene immediately. The emergency plan was activated and the emergency services, including helicopter support, were called to the scene."
However, its said that "despite all of the care given to the competitor he did not survive."
The event organiser said that the man's next of kin have been notified, and it extended its "deepest condolences to the friends and family of the competitor and ask that their privacy is respected at this time."
Earlier, gardaí confirmed that they and emergency services had attended the scene of a medical emergency on the mountain at around 1pm and that a man in his 40s was taken to a nearby hospital.