Baby may have been unrestrained before BMW and Merc crash

POLICE are investigating whether an 11-month old boy was sitting unrestrained on his father's lap before he was seriously injured in a crash in Sydney's south west.

Paramedics treated the young boy after a car crash which involved a Mercedes Benz and a BMW on Clingan Avenue, Lurnea, at 5.50pm yesterday.

The child, who was travelling in the BMW, is in a critical condition with serious head and facial injuries after he was hit by the driver's airbag.

He was flown from the scene to The Children's Hospital in Westmead.

The driver of the BMW, a 31-year-old man, and the driver of the Mercedes Benz, a 32-year-old man were uninjured. They were taken to hospital for mandatory drug and alcohol tests.

Officers from the Metropolitan Crash Investigation Unit are investigating where the child was seated when the airbag was deployed.