The distraught mother of missing schoolboy Noah Donohoe fought back tears as she appealed for the safe return of her son.
As hundreds of volunteers continued to search for the 14-year-old, who is believed to have suffered a head injury before he disappeared in north Belfast on Sunday evening, his mother Fiona said someone must have spotted "a half-naked boy", adding: "I just want my son back."
PSNI Superintendent Muir Clark yesterday urged people to check vacant homes, sheds and vehicles in an attempt to find the missing schoolboy.
He said officers believe Noah may have fallen off his bicycle and injured his head, causing him to become disorientated.
Police said the teenager got back on his bicycle, cycled into Northwood Road and took off his clothes.
He was later seen cycling naked, before dropping his bicycle and walking toward a densely wooded area.
Ms Donohoe yesterday pleaded for "just one person" to provide information that could bring Noah home safely to her.
"No one has come forward to say they saw him," she said.
"I'm pleading with you, the public, did you see a young half-naked boy on June 21?
"I need to know if there were any eyewitnesses, so please come forward.
"You may think it's insignificant but it could turn out to be really relevant."
Supt Clark said: "We are working on the hypothesis that Noah may have suffered some injury, causing him to behave in a way that is not normal.
"He may be seeking shelter because he has no clothing or money, or he may not realise where he is."