#INLAND WATERWAYS - It was a hotly anticipated find - but the image of what appeared to be a rare German submarine in the depths of Lough Foyle turned out to be a ghost.
RTÉ News reports that a team brought in to verify a sonar image captured by a search and rescue team from Mallow have confirmed that it was a 'sonic illusion'.
Northern Ireland's Environment Minister Alex Attwood called in the experts after the search team discovered what looked like the outline of a midget U-boat on the lough bed near Derry.
The possibility was a real one, as the lough had been a major naval base during the Second World War.
But a full survey of the lough revealed that the original image was an apparition caused by sonar distortion.
"There is no doubt for a moment there was a thrilling possibility which has now not come to pass," said the minister. "I do share a sense of disappointment."
RTÉ News has more on the story, including images and video, HERE.