A senior PSNI officer has urged people in north Belfast to check their gardens, sheds, outbuildings, cars and caravans for signs of missing Belfast teenager Noah Donohoe.
Noah Donohoe (14), from south Belfast, was last seen in the north of the city at around 6pm on Sunday.
An eyewitness saw a young man matching Noah's description fall off his bike and injure his head in the North Queen Street/York Street area.
Police said the teenager got back on his bicycle, cycled into Northwood Road and took off his clothes.
He was later seen cycling naked. He then dropped his bicycle and began walking.
A massive police search, including the use of a search and rescue dog, has been ongoing since Sunday.
Searchers have found Noah's skateboarding helmet, bicycle, Nike trainers, blue tie-die hoodie and his mobile.
Police have not yet recovered his khaki green North Face jacket, grey sweat shorts and his khaki rucksack which contained a Lenovo laptop.
There has been a massive community response with hundreds of volunteers coming forward to help search for him.
At a press conference today, PSNI Superintendent Muir Clark said: "We are working on the hypothesis that Noah has suffered some injury".
He said either the teenager, who has no money, may have tried to seek shelter or may not know where he is.
He asked people to check their gardens, sheds, outbuildings, cars and caravans for signs of Noah.
"If anyone has had clothing which has gone missing from a washing line over the last few days, you need to call us," he said.
Mr Clark also called on landlords who own empty properties in the area to check them.
Noah's mother Fiona and two aunts Shona and Niamh attended this afternoon's press conference.
Mr Clark said police and Noah's family are "incredibly concerned" for his safety.
He appealed to Noah directly to say he was not in any trouble.
He also asked the teenager's friends to contact police with any information, no matter how trivial.
"This behaviour is completely outside of Noah's normal character," he said.
Earlier, his mother Fiona said in a statement she has been overwhelmed by all the support.
"It is actually giving me and my family the strength to fight for him to be found," she said.
"I just wish at this stage people would start offering for their houses to be searched so that shelter could be eliminated.
"The police can't ask to search but in this situation if people in the vicinity could find it in their hearts to say please search my house to eliminate areas of question.
"My heart is broken I am begging people do this I know I am asking a massive thing but if you knew my Noah he was the most thoughtful loving darling who does not deserve to be suffering or unfound.
"Please hear my plea I am speaking for Noah my baby.
"Please think if it was your child I would let them search my home from top to bottom."
