Police have issued a renewed appeal for help to trace a missing teenager.
Steven Tiffin, aged 14, from Buckingham, was last seen at an address in Century Avenue, Oldbrook, Milton Keynes, at 12.30am on Sunday.
He is white, 5ft 10ins tall, of slim build with short mousey brown hair.
He was last seen by a relative wearing jeans and a grey hooded top.
Steven has links to Aylesbury, Milton Keynes, Oxford and Northants.
Det Ch Insp Richard North from Milton Keynes CID said: “I am appealing for anyone who has seen Steven or anyone matching his description to contact police.
“We are growing increasingly concerned about Steven’s whereabouts.
“It is possible that Steven is still in the Milton Keynes area, however it is possible that he may have travelled out of the area to London.
“If you see this appeal Steven, please call 101 and let us know you are safe.”
Anyone with any information about Steven’s whereabouts should call the 24-hour Thames Valley Police enquiry centre on 101 quoting occurrence number 43140092907.
If you don’t want to speak directly to the police, you can contact the independent charity Crimestoppers anonymously on 0800 555 111. No personal details are taken, information is not traced or recorded and you will not go to court.