On Mar. 1, a helicopter crashed in a semi-rural area of northwest Sydney early afternoon, leaving four people in serious injuries and one in stable condition.

New South Wales police confirmed the helicopter crashed in the vicinity of Cobah and Perry Roads, Arcadia just before 1 p.m. (03:00GMT).

A NSW Ambulance spokeswoman said five people were on board when the helicopter crashed.

"Four patients are reported to be in a serious condition with life threatening injuries, and one patient is reported to be stable," the Australian Associated Press quoted the spokeswoman as saying.

Paramedic crew and two helicopters rushed to the scene and were treating the injured at the crash site.

Fire crew arrived on the scene at 1.15 p.m. (03:15GMT) to assess the wreckage and there were no reports of fire or explosions.