Fire crews are dealing with a large gorse fire in the Mourne Mountains near Newcastle, Co Down.
They were called to the scene at Bloody Bridge in the early hours of Friday.
A total of 12 appliances and 58 firefighters are currently in attendance.
"We have been in attendance since the early hours of this morning and our firefighters are working hard to extinguish the fire using beaters," an NIFRS spokesperson said.
"We would ask the public to stay away from the Bloody Bridge area while the incident is ongoing to help facilitate our appliances and firefighters who are in attendance."
They continued: "We would request that the public avoid the Glen River and Bloody Bridge River access points this weekend due to the ongoing incident and potential for further fires in the extremely dry conditions.
"NIFRS would like to highlight the unsuitability for wild camping in these areas this weekend due to current fire conditions.
"We would ask the public to exercise due care and vigilance in relation to fire safety if out in the countryside during this current dry spell."