Police have named the young man who died after being struck by a car on Sunday morning as Marc Garry Quinn from Castlewellan.
The 18-year-old died in hospital after being treated at the scene of the collision on the Newcastle Road in Co Down.
A PSNI statement read: "Marc died following the collision which happened shortly before 1.30am involving a Black Kia Sportage.
"The PSNI Collision Investigation Unit are appealing to anyone who witnessed the incident or who may have dash-cam footage to contact them on 101 quoting reference 166 of 30/01/22."
Kilcoo GAC posted a tribute to the young man on their social media accounts.
"It is with the deepest regrets we write this message today after our famous victory yesterday," a spokesperson said.
"Marc Quinn, an 18-year-old boy and a member of the Aughlisnafin GAC club was tragically killed last night.
"Marc is a nephew of Mary McEvoy, wife of Barry.
"Eoghan Rua Cill Chua sends our deepest and most sincere sympathies to the Quinn/McEvoy families and everyone at Aughlisnafin Gac. RIP."
Funeral Times posted: "Quinn (Castlewellan) 30/1/2022 - Suddenly as the result of an accident, Marc, dearly beloved son of Gary and Jenny Quinn and cherished brother or Ruairí and Ryan, R.I.P.
"Funeral arrangements later. On his soul sweet Jesus have mercy. Deeply regretted by his sorrowing mother, father, brothers, Granny and Granda Quinn, Granda Grant, aunts, uncles, many cousins, friends, and entire family circle."
