A 78-year-old man is in a critical but stable condition after being found unconscious on a suburban street on Monday after a suspected hit-and-run (pictured, paramedics at the scene)

An elderly man has been left in a critical condition after being found lying unconscious on a street after a suspected hit and run.

Emergency services were called to Boronia Avenue in Epping, in Sydney‘s north-west, at around 7:45pm on Monday after a resident investigated a loud noise and found the unconscious 78-year-old man.

He was airlifted to the Royal North Shore hospital where he remains in a critical but stable condition after suffering suffering severe head and internal injuries.

No vehicle was seen to have stopped in the area as investigations reveal a light-blue sedan was driving along the road around the same time.

A 78-year-old man is in a critical but stable condition after being found unconscious on a suburban street on Monday after a suspected hit-and-run (pictured, paramedics at the scene)

A 78-year-old man is in a critical but stable condition after being found unconscious on a suburban street on Monday after a suspected hit-and-run (pictured, paramedics at the scene)

A 78-year-old man is in a critical but stable condition after being found unconscious on a suburban street on Monday after a suspected hit-and-run (pictured, paramedics at the scene)

Officers from Ryde Police Area Command and NSW Ambulance paramedics arrived at the scene and tended to the man until a medical team arrived in a Toll helicopter, which landed on a nearby tennis court in Grant Close.

According to NSW Police, ‘the man’s injuries appear consistent with being hit by a vehicle’.

‘Officers from the Crash Investigation Unit are now conducting the investigation,’ NSW Police said.

‘Police hope the driver of the vehicle may be able to assist investigators with information about the incident.’ 

Police are also urging anyone with information or relevant dashcam footage to come forward to the CIU or call Crime Stoppers on 1800 333 000.

Police believe the driver of a light-blue sedan seen driving along the Epping street around the same time can assist with investigations (pictured, police at the scene)

Police believe the driver of a light-blue sedan seen driving along the Epping street around the same time can assist with investigations (pictured, police at the scene)

Police believe the driver of a light-blue sedan seen driving along the Epping street around the same time can assist with investigations (pictured, police at the scene)

The incident comes one day after a boy was rushed to hospital when he was hit by a car on his way to school at Marrickville, in Sydney’s inner-west.

Bystanders administered first aid to the boy before paramedics arrived to control the bleeding. 

He was rushed to Sydney Children’s Hospital with a ‘deep cut on his head’. 

The incident was one of three that occured in Sydney’s school zones on Monday.’

Luckily none of the children were seriously injured,’ NSW Ambulance Inspector Mick Corlis said.

‘It is a reminder to drivers to be extremely careful in school zones.’