Gardai are investigating if the same hit-team involved in the murder of Eddie Hutch took part in Wednesday's gangland slaying of Noel 'Kingsize' Duggan.
There have been no arrests made in either case but sources said that the investigation teams in Ashbourne and Mountjoy garda stations have already been in consultation.
A lone man dressed in dark clothing was seen by witnesses running across the green in front of Noel Duggan's house after he was shot dead.
Gardai have said it is suspected this man jumped into a dark BMW car, which sped him away from the scene.
The BMW was found burned out along with another vehicle in Cairn Court.
Shortly after the discovery of the cars, an individual was seen getting into a dark coloured saloon car that drove back towards Ratoath.
"We are particularly interested in a man who was seen in dark clothing running from the scene onto the Fairyhouse Road," Supt Jim Cannon of Ashbourne Garda Station told reporters.
"We're also interested in a BMW car which was seen driving onto the Fairyhouse Road and in the direction of Fairyhouse.
"A short time later two cars were found burned out by gardai in Cairn Court.
"One of these cars was a BMW and very shortly after that somebody was seen getting into a dark coloured saloon car and heading in the direction back into Ratoath village," he added.
"A car that was later found burned out at Dublin Airport was also recovered by gardai but there were no immediate indications it is connected with Wednesday night's shooting."
Supt Cannon said initial indications were that Duggan had just arrived home when he was shot.
He said there was no intelligence that Duggan's life was at risk or that he was a target for a murder.
Yesterday gardai were forensically examining Duggan's Mercedes car, which was towed from the scene.
A post mortem was also carried out on Duggan's body yesterday in Lourdes Hospital in Drogheda after it was removed from the scene in a hearse as the massive probe continued.