A woman watches her grandson on a swing at a playground at the seaside suburb of Williamstown in Melbourne June 18, 2008. Reuters/Mick Tsikas

An 11-month-old girl was found unconscious on the floor at her home in Lithgow on Sunday. Triple-0 received a call that the baby girl fell from a cot. Paramedics treated her before she was flown to the Lithgow hospital. Then she was transferred through an airlift to the Children's Hospital at Westmead, Sydney, where she received a surgery.

Police said that they received a call before 8:50 p.m. on Sunday. They were asked to help an injured child at a home on Landa Street. According to reports, she was unresponsive with critical head injuries. She had a cardiac arrest, but had her pulse back after the treatment from paramedics.

Officers from Bathurst and Sydney are investigating the case.

Chifley Local Area Command set up a crime scene in the baby's home to proceed with the investigation. Forensic officers were also present to examine the scene. The relative of the baby and her partner were being questioned about the incident. The woman told the police that she was not at home. The emergency call came from her partner. The couple cooperates in the investigation.

The investigation is still ongoing to find out how the baby acquired the injuries. Detectives from child Abuse Squad, investigates crimes against children, which include physical abuse, sexual assault and serious case of neglect, lead the investigation into the incident. The agency works in partnership with the Department of Family and Community Services and NSW Health.

People who have information about the incident are encouraged to report to the authorities. Witnesses must provide evidence to support the allegation to the offender.

Anyone who has information can contact the police or Crime Stoppers 1800 333 000. Every detail of information provided is treated as a confidential case evidence.