Infant twins 'fighting for their lives' after being pulled unconscious from backyard pool.

The parents of twin toddlers found unconscious in their backyard pool last night are by their bedside in hospital, anxiously awaiting news on their condition.

Identified today as Charli and Robbi Manago, the 23-month-old siblings were pulled from a swimming pool at their home in the northwestern Sydney suburb of Kellyville Ridge just after 7pm Tuesday.

They were rushed to Westmead Children’s Hospital in a critical condition, and have since undergone tests to determine the extent of their injuries, reports The Daily Telegraph.

A family friend told the paper that the twins’ prognosis remains unclear.

“They are doing more tests on them … they are breathing and that’s the main thing,” she said.

“We don’t know much more than that.”

Robbi and Charli Morango are in a critical condition. Image: Facebook.

Neighbours rushed to the Manago family's aide after hearing desperate screams coming from the Manago's property. Among them, Michelle Skebington, who told The Daily Telegraph she helped perform CPR.

“We may have saved those children’s lives. I’m not sure but I hope like hell we have,” she said.

“We just kept going and going and going until paramedics arrived. I was so pleased to see the paramedics.”

Chief Inspector Garry Sims told the ABC that investigators believe the children were out of the sight of their parents for a period of time.

“I think those with children are very aware how quickly things can change,” he said.

The tragic incident comes just three days after a 14-month-old baby drowned in a back yard pool in Medowie, in the NSW Hunter region.

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