A sixth person has died as a result of Friday's fire at a Sydney nursing home.

Police have confirmed that a 79-year-old woman died at Liverpool Hospital this morning.

Nurse Roger Dean, 35, has been charged with the murder of four of the residents at the Quakers Hill facility.

Officers say investigations are continuing and they expect further charges to be laid.

Police have yet to name two of the other five victims, but they have confirmed 97-year-old Ella Wood, 86-year-old Lola Bennett and 73-year-old Alma Smith have died.

Meanwhile, police are refusing to confirm newspaper reports alleging they spoke to Dean about unrelated allegations before the fire.

Because the matter is before the courts, police will not discuss any detail about the reports.

Dean appeared in court via video link on Saturday and has been remanded in custody.

Before his arrest, Dean spoke to the media assembled at the scene of the devastating fire, saying he was involved in the rescue.

Police say Dean is a registered nurse and an employee of the burnt-down centre. He also lives in Quakers Hill.

Sorry, this video has expired Families of survivors touched by help given to their loved ones

The aged care industry is spending the weekend transferring Quakers Hills residents to alternative accommodation.

Charles Wurf, from the New South Wales Aged Care Association, says some homes have reopened beds and permanent accommodation has been found for about 50 residents.

"That was our main focus - to locate spare capacity or extra beds that would be available as a permanent alternate home for the residents," he said.

"And we were able to find sufficient extra beds that will meet the demand for approximately 50 residents."

Detective Superintendent Mike Willing from the Police Homicide Squad said yesterday that forensic officers were working in tough conditions at Quakers Hill.

"This investigation has had an impact on all of the investigators. This is a tragedy for Sydney, it's a tragedy for the entire community," he said.

He said investigators were still trying to piece together the evidence - a task expected to take some days because of structural damage to the building.