DETECTIVES investigating the murder of a 90-year-old man at a Woonona nursing home, have been advised a man allegedly involved has died.

Detectives had been investigating the death of a patient after he was allegedly assaulted by a 70-year-old man at the Illawarra Retirement Trust nursing home on Tuesday November 27 2018.

A 90-year-old man suffered critical injuries in the assault and was unable to be revived. Both men were patients in the high-dependency dementia ward at the Popes Road nursing home.

Wollongong police together with the State Crime Command’s Homicide Squad, initiated an investigation into the death of the 90-year-old man; however, detectives have now been advised the 70-year-old man died in Shellharbour Hospital on Thursday December 27 2018.

A final report on the investigation into the death of the 90-year-old man will be made to the Coroner.