The child was taken by the 4.2 metre-long reptile while swimming with her family at Mango Creek near Nganmarriyanga – also known as Palumpa – 350km south-west of Darwin last Tuesday, July 2.
A search was mounted by police and a boat and helicopter called in, before her remains were found on Thursday.
The crocodile resurfaced yesterday and Northern Territory police confirmed it was the same animal that was responsible for the attack.
The family and local community have been notified and a report will be prepared for the coroner.
“The events of last week have had a huge impact on the family and local police are continuing to provide support to everyone impacted,” Senior Sergeant Erica Gibson said.
“The family have requested privacy as they grieve.”