Azzam Raguragui was killed in a stabbing in Finsbury Park in Dundrum on Friday night.
The 18-year-old's parents have today issued a statement, saying they are putting their faith in the Irish justice system to hold those responsible to account.
They say the past few days have been difficult and challenging but they are grateful for the community support they have received since their son's death.
They have also appealed for space and privacy to allow them to grieve.
Gardaí say a youth is helping them with their inquiries, but no arrests have been made.