The missing backpack of teenager Noah Donohoe, has been recovered including the content of a book and laptop computer.
Noah was last seen on Sunday before he disappeared and despite an extensive search has yet to be found.
Superintendent Muir Clark said: “Thanks to a call from a member of the public, we have been able to locate and recover Noah’s backpack and laptop computer.
“These items are now being examined by specialist officers, for any information which may help locate Noah.
“I have previously commented about various rumours circulating about Noah’s disappearance. I explained that this type of commentary and rumour was distressing for Noah’s family and unhelpful as we continue our search to find Noah.
“Last night we became aware of social media posts. We are aware of the content of these social media posts and are content at there is no truth behind their content.
“A 26 year old aged male was arrested in the early hours of this morning on suspicion of improper use of public electronic communications network and he is currently helping with enquiries.
“Our search for Noah continues. We have not yet found his khaki green North Face coat and grey sweat shorts.
“We need to find these outstanding items. If anyone has found any of these items and not yet come forward, please call us immediately on 101.
“Again, I would like to thank everyone who has contacted police so far with information. If you have any information that you think might help. If you have any cctv or dashcam footage that you think might help and have not yet come forward, please call us on 101 straight away.”