Gardaí investigating the murder of Keane Mulready-Woods have released an image of a car they are trying to trace.
The teenager's remains were found in a sports bag in Coolock in Dublin on Monday night.
However officers are still awaiting confirmation from Forensic Science Ireland on whether partial human remains, discovered at Trinity Terrace in Dublin 3 on Wednesday, are those of the the teenager.
The Taoiseach and Justice Minister are due to be briefed about the murder during a visit to Drogheda today.
Keane was last seen in Drogheda by his family at around 6.00pm on Sunday.
At the time he was wearing a navy Hugo Boss tracksuit, black Hugo Boss runners (brown sole, black laces), a red/orange Canada Goose jacket and a Gucci baseball cap.
These items of clothing have not been recovered.
Investigating Gardaí are also seeking the public's help in tracing the movements of a blue Volvo V40 SE LUX 1.4 diesel car.
This was found partially burnt out on January 15th.
This Volvo had a registration of 161 D 48646 and was stolen in the Sandymount area of Dublin on December 15th.
At the time it was found, the car had false registration plates 141 MO 1925.
In a statement Gardaí say: "Has any person seen this Volvo V40 being driven or parked up with either registration plate between 15th December 2019 and 15th January 2020?
"The Volvo had 4 matching alloy wheels when stolen, one wheel has been changed, has any person information that can assist this investigation?"
Gardaí are also appealing for any person with information - or any road user with video footage - who may have been in or passed through the Ballybough Road, Clonliffe Road, Poplar Row, Luke Kelly Bridge location between midnight on January 14th and 2.00am on January 15th.