An 83-year-old woman has become the 11th person to die following a fire at a Sydney nursing home over which a former nurse from the facility is facing murder charges, police said today.

The woman died in the burns unit at Sydney's Royal North Shore Hospital  where she was being treated following the blaze on November 18 at the Quakers Hill Nursing Home, which also left dozens of elderly residents injured.

Three residents died in the inferno, with eight others since succumbing to their injuries. A Maltese-Australian was among them.

A 35-year-old man who worked as a nurse at the home has been charged with eight counts of murder. Police said they had not ruled out laying further charges.

The New South Wales government ordered a review of criminal screening of staff at state nursing homes and an audit of buildings at aged care facilities following the tragedy.

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