The man believed killed by lightning in the Mourne Mountains was a sergeant in the Royal Signals, the army has said.
The body was found on Slieve Donard
The body was discovered at the top of Slieve Donard on Saturday by a group of walkers.
The man's identity has not yet been revealed but an army spokesperson said he was aged 29 and was from north Humberside
Police said that a post mortem examination on the body had found there were "no suspicious circumstances".
An Irish coastguard helicopter from Dublin brought police and a doctor to the summit where he was recovered.
Ed Kilgore from the Mourne Mountain Rescue Team said the death was very unusual.
"There is lightning in the mountains at times and storms, as anywhere, and the danger simply being because you are that bit higher up, the chances of strikes are possibly a little more risky.
"I have been in the team for more than 25 years and this is the first possible occurrence I am aware of, of someone actually being killed by a lightning strike."