A 19-year-old male suffered critical head injuries when a double-brick wall under construction fell on him in Kellyville this morning.

It’s understood the construction worker was pulled unconscious by co-workers from underneath the pile of bricks, which collapsed during highly windy conditions.

CareFlight’s rapid response rescue helicopter was tasked to the residential building site shortly before 10am, landing within 10 minutes on a nearby vacant block.

Ambulance crews were on scene treating the man. Fire & Rescue crews were also on scene.

CareFlight’s specialist doctor and critical care paramedic treated the man at the scene for critical head injuries, intubating him and placing him an induced coma.

The medical team continued treatment as the man was taken by road ambulance to hospital in critical condition.