To date, five people have been arrested in connection with the investigation, however no one has been brought to justice.
A fresh appeal has been launched in connection with the murder of a man who was last seen in Tallaght in Dublin 16 years ago.
The last sighting of Paul 'Frank' Byrne was on July 15th 2009 at Kilmartin Green in Tallaght, when he was seen leaving in a 2000 registered wine-coloured Mitsubishi Carisma accompanied by a number of other men.
Just over a year later, on July 29th 2010, the 20-year-old's remains were discovered in a wooded area by a forestry worker near Blessington in Wicklow.
To date, five people have been arrested in connection with the investigation, however no one has been brought to justice.
Gardai in Blessington have renewed their appeal for information.
They said anyone who comes forward will be treated in a sensitive manner.

Kfm Strengthens Position As Kildare’s Most Listened-To Station, According To Latest Ipsos/MRBI Report
Quarter Of Uisce Éireann Staff Earned Over €100k Last Year
Meath Bird Flu Case Prompts Warning, But Chicken And Turkey Safe To Eat, Says Agriculture Minister
One-Month Road Closure In Catherinestown To Start Next Week To Facilitate Maynooth Pipeline Works
Commuter Chaos On M7/N7 Renews Calls For Standby Emergency Response Team During Morning Gridlock
Thousands Of Workers Could Get Tax Back In Time For Christmas, Says Financial Advisor
Tension In Fianna Fáil Over Alleged Rebel List, With Kildare TD Sean Ó Fearghaíl Labelled Part Of Old Guard
Exclusive: Cllr Bill Clear To Join Independent Ireland After Months Of Discussions