Dissident hit target Harry 'O' McMahon remains in a coma in hospital after being shot through the eye socket, in Belfast.
A man with two young kids watched as the hitman calmly and callously shot the close associate of Action Against Drugs chief Roy McAuley.
A feud between warring dissident factions is what is thought to be behind the murder attempt at the fast food restaurant on the Oldpark Road.
The hit had all the hallmarks of the INLA assassination of CIRA man Tommy Crossan last year.
Police have since launched a fresh appeal to the public for information on the attack.
Detective Chief Inspector Gary Reid said: "We believe that one man was involved in the shooting.
"He made off in a blue coloured Vauxhall Astra estate car, vehicle registration number ANZ 5590, which was found on fire in Torrens Gardens less than a mile away, a few minutes later. The car may have broken down and may been pushed off the road.
"We are particularly keen to hear from anyone who may have been in the Oldpark Road area around 5.35pm last Friday and who may have witnessed the shooting or any suspicious activity prior to it."
He added: "We are also keen to hear from anyone who may have been in the Torrens Gardens area when the vehicle was set alight."