Athrun was from the south Gloucestershire area and had last been seen close to the boating lake and playpark wearing blue and white patterned swim shorts.
A body has been found during the search for a missing boy.
The discovery was made four days after Arhrun, 16, was last seen during a family holiday in Llandudno, Wales.
The teenager, from Gloucestershire, was reported missing on Saturday, May 10, and a search was launched.
A body was found off the Welsh coast today, Wednesday, May 14.
It was yet to be formally identified, but Athrun's family were informed and were being supported by specially trained officers.
A spokesperson for North Wales Police said: "A body has been recovered this evening during searches for missing 16-year-old Athrun.
"Multi-agency searches resumed this evening, Wednesday May 14, in the West Shore area of Llandudno following sighting of a body on Tuesday evening.
"Searches conducted by the police underwater search team, NPAS and coastguard resulted in a body being recovered today at 6.20pm.
"Formal identification is yet to take place, but Athrun’s family have been informed and are being supported by officers.
"The death is not being treated as suspicious, and the coroner has been informed."
Chief Insp Trystan Bevan said the family had asked for privacy.
He said: “My deepest condolences remain with Athrun’s family, and I would ask for their privacy to be respected at this incredibly sad and difficult time.
“This is not the outcome anyone hoped for, and I would once again like to thank partner agencies and members of the public for their overwhelming support and tireless assistance with the searches over the last five days.”