It had happened in the past that Anne Cameron escapes from his retirement home.
Anne Cameron, 79, disappeared from aged care facility Ozcare near Port Douglas on Tuesday afternoon after she went for a walk.
Human remains have been found in the 4.3-metre crocodile responsible for taking a grandmother in far north Queensland last week.
The crocodile was reportedly removed from the Mowbray River and examined by a specialist in Cairns on Tuesday, following which it was confirmed the reptile was involved in Cameron's death.
Human remains were found on Tuesday inside a large crocodile suspected to have killed in the north-east ofAustralia a man in his seventies and suffering from dementia, has announced the police.
Acting Inspector Ed Lukin called the investigation "very protracted and hard".
The investigations are continuing and officers are preparing a report for the Coroner.
Her walking stick and clothing were found by a creek on Thursday, near where she is believed to have walked into a tropical forest and become lost.
"It has been a very hard and harrowing week for all involved, and my thoughts are with the family of Anne Cameron at this sad time", Queensland Environment Minister Steven Miles said in a statement.
Department of Environment and Heritage Protection wildlife director Michael Joyce said the reptiles often travel between areas using the ocean as a "crocodile highway", which made identification hard.
Ms Cameron's death has prompted Katter's Australian Party to renew calls for more stringent management of crocodiles, including culling.
Saltwater crocodiles kill an average of two people a year and their numbers have rocketed since they were made a protected species in the 1970s but Ms Cameron's family said they did not want to see any of the animals killed.