Searches are continuing ten days on from the last confirmed sighting of 16-year-old Mateusz Lugowski from Wakefield.
Resources such as specialist search officers, neighbourhood police patrols, underwater search teams, drones, dogs and helicopters have all been used in the investigation.
Mateusz was last seen on CCTV at 3:14pm on Sunday 19 January near to the Domino’s Pizza in the Chantry Bridge area.
He was then seen at 3:20pm by two school friends close to the river behind the Evans Halshaw garage.
This is the last confirmed sighting of Mateusz.
There have been no further CCTV or confirmed sighting of Mateusz since.