Police are appealing for information about a 15-year-old boy who has gone missing from Spalding.
Duy Nguyen was last seen at around midday on December 4 at the Peacocks store in the Market Place, where he was shopping with his foster carer.
He may be trying to make his way to London.
Duy is described as 5′ 2″ tall, of slim build, with short dark hair.
He was last seen wearing light coloured blue tracksuit bottoms and a blue scarf.
Duy also has a scar over his right eye.
Anyone who thinks they have seen Duy is asked to call 101, quoting incident number 165 of December 4.