A woman and child have died following a horror two vehicle crash on the Hume Motorway near Campbelltown just before noon today.
Emergency services responded to the tragedy, which occurred at Menangle Park, at about 11.20am.
Police say that a northbound cement truck and a silver SUV crashed in the northbound lanes of the Hume Highway.
The female driver and a child died at the scene.
A Toll helicopter landed a medical team nearby and was assisting NSW Ambulance paramedics treating a second child.
The man driving the truck, who was not physically injured in the crash, has been taken for mandatory testing.
Officers attached to Campbelltown City Police Area Command have established a crime scene, which will be examined by specialist police from the Crash Investigation Unit.
Police are urging that anyone with information or dashcam footage of the tragic incident to call them or Crime Stoppers on 1800 333 000.
A report will be prepared for the information of the Coroner.
