Mohammad Abu Sammour, 49, was found injured at a housing development under construction early on Sunday morning.

He was taken to to Wishaw General Hospital but died a short time later.

Det Ch Insp David Pinkney said: “Mr Abu Sammour worked as a site security supervisor who travelled around a number of building sites in the central belt.

“Enquiries are being carried out to identify his last known movements and we would urge anyone with information to contact us.”

Sammour’s work van was seen being driven away from the scene and was later found burnt out.

Det Ch Insp David Pinkney said: “We now believe that the vehicle which was seen driving off is in fact Mr Abu Sammour’s works van which is a white Peugeot Partner van with blue writing on the side.

“At this time the motive of the murder is unknown. However, our extensive enquiries are ongoing and we retain an open mind.”