The father-of-two was shot dead while he was escorting a cash delivery van to a credit union in the rural village of Lordship, near Dundalk, at around 9.30pm on Friday, January 25.
Two days after the shooting, a Volkswagen Passat was found some 25 miles away, in Fews Forest, between Keady and Newtownhamilton.
Last night (Friday), checkpoints were mounted by the PSNI at various locations near Newtownhamilton.
And this afternoon (Saturday), police made a very specific appeal in relation to the vehicle. Police believe the gang involved travelled in the dark coloured Passat from Dundalk across the border to the forest, where it was abandoned and set on fire.
The PSNI has onfirmed that the car is still the subject of “rigorous and extensive forensic examination” in Northern Ireland.
The checkpoints last night were staged at the Chalybeate Road junction with Cortamlet Road, the Cortamlet Road junction with Blaney Road, the Keady Road junction with Chalybeate Road, and the Tullygeasy Road junction with Keady Road.
The PSNI are specifically appealing for anyone who saw a dark coloured Volkswagen Passat in the area on after 9.30pm on Friday, January 25; who saw any other vehicles in the area around this time; who observed fire, smoke or burning vehicles in the area; or anyone who can assist in any other way to come forward.
Anyone who can help is asked to contact detectives in the PSNI on 0845 600 8000 or detectives at An Garda Síochána on 042 9388470 in the Republic of Ireland.