A manhunt is underway after the death of a man who was apparently hit by a ute in a road rage incident in Sydney.

Emergency services were called to Jersey Road at Blackett, in Sydney’s west, on Thursday morning after receiving reports that a pedestrian had been hit by a vehicle.

Police found a 27-year-old man, who was wearing high-visibility clothes, had been hit by a ute before it was driven away.

Witnesses who were nearby attempted to revive the man. He died at the scene shortly after, while being treated by paramedics.

Police said it was believed the victim had also been driving but stepped out of his vehicle.

“Apparently the victim had gotten out of the vehicle after being threatened by the car following him,” said Area Command Duty Officer Shane Ranee, from Mount Druitt Police.

“That’s what led us to believe it could have happened because of a road rage incident.”

Ranee said the victim had apparently been “dragged” about 100 metres in the distressing incident.

The ute driver who is sought by police “took off”.

It was not known if the two drivers were known to each other.

“It’s devastating and I feel bad for the victim’s parents, victim’s family. And I appeal for the driver to please come forward and hand yourself into police because we will find you,” said Ranee.

The victim’s vehicle was towed away from the scene.

There were a number of witnesses who described the aftermath to media.

“I was just going to grab some drinks and I heard this guy laying on the ground, a couple of cops was around this area trying to do CPR for him,” one witness told the ABC.

Another said: “Anyone can just hit someone and run away and just show no remorse, not to stop and check on him or anything like that. It is absolutely disgusting.”

Investigators are looking for a white ute with a metal tray, a black canopy and a black toolbox with metal racks on top that was seen in the area.

Police have set up a crime scene and are searching for the driver involved in the alleged road rage incident.

Anyone with dashcam footage, CCTV vision or information about the crash is urged to contact police or Crime Stoppers.

-with AAP