A man has been arrested in connection with an investigation to find missing 16-year-old Donny Lee.
Donny has been missing from Slough since November 2.
He is described as around 5ft 10ins tall with a broad build and short black braided hair.
He often wears dark-coloured designer tracksuits, although it is not known what he was wearing when he went missing.
A 19-year-old man has been arrested in connection with this investigation.
He has been released on police bail until 24 December.
Detective Inspector Will Crowther, of Slough police station, said: “As this investigation progresses, we are growing concerned for Donny’s welfare, and would like to find him very soon.
“As such we are again re-appealing to anyone that has information on his whereabouts, as well as anyone that may have seen him, to please make contact with police.
“This firmly remains a missing person investigation and I am keeping an open mind as to the circumstances of Donny’s disappearance.
“However, we would also like to make it clear that robust action will be taken against anyone that participates in any efforts to prevent the police from locating Donny.
“Anyone with any information about Donny’s whereabouts is asked to contact the 24-hour Thames Valley Police enquiry centre, by calling 101 and quoting reference 43200355747.”