View Larger Map

A man has described how he and others desperately did what they could in hope that an unresponsive baby girl would breathe again.

Police are investigating the sudden death of an 11-month-old baby in Canning Vale, south of Perth, with Acting Sergeant Barb Donarski saying ambulance officers were called about 10pm on Wednesday night.

She said they rushed to an area close to the Nicholson Road intersection in Canning Vale after the caller reported a female was with a small baby who required emergency first aid.

The man, whose name is Ryan, told Channel Seven News he had been heading to the gym on Wednesday night when a woman drove into the car park behind him yelling “help me, help me”.

“I turned off to go to the gym and then looked at my rear vision mirror and the car was right behind me, so I’ve pulled in to the gym and this lady has just yelled out to me, ‘help me help me, my baby’s dead’,” Ryan said.

“She had it situated in her arms while she was driving, I just asked her, ‘what happened, what happened’ and called triple zero and just went to see any signs, pulse and all that sort of stuff and there was nothing.

“Another car had just pulled in to the gym with us and I ran to her, gave her my phone and just asked her to assist emergency services and just do whatever you can and then I ran into the gym to see if there could be a nurse, doctor, anyone that could help the situation.

“We then moved the baby to the backseat and just tried whatever we could and it wasn’t good. We just all looked at each other.”

The baby was taken to Armadale Kelmscott Memorial Hospital where she was confirmed dead.

Acting Sergeant Donarski said police "believe the child's father was at the Harrisdale address where the baby had been and that the gas was on".

Police spokesman Adam Brouwer said the 11-month-old baby girl's death was being treated as a homicide and police were currently speaking with a man who was assisting in the investigation.

He said the man was known to the baby but would not provide any further detail.

Nine News reporter Estelle Lewis told Radio 6PR that emergency crews went to a car park and it was there that they gave medical help to the girl.

She said the mother of the infant found her blue in the face and her husband unconscious in their home which was “full of gas”.

Anyone with information to the incident is asked to call Police on 131444.