A man in his 20s has died and two others taken to hospital after an incident at a mushroom farm in County Monaghan.
Emergency services were called to the farm near Emyvale at about 20:00 BST on Wednesday night after a report that three men were experiencing breathing difficulties.
The men were found unconscious when emergency services arrived.
One man was pronounced dead at the scene.
The other two men, also in their 20s, were taken to Cavan General Hospital.
A post-mortem examination will take place later on Thursday.
Gardaí (Irish police) and the Health and Safety Authority have launched investigations into what happened.
The area has been sealed off pending a technical examination by police.