Queensland Police said: “Human remains were located within two crocodiles euthanised by department of environment and science (DES) wildlife officers.
“Police believe the remains are those of the missing 65-year-old Laura man, pending the formal identification process.
Officers believe the two crocodiles (4.1m and 2.8m) were involved in an incident with the 65-year-old and were located upstream from where he was last seen.
“Search and rescue operations in Lakefield have been discontinued at this time. Police will now prepare a report for the coroner.”
Mr Darmody was last seen at Kennedy Bend, a campsite at the national park.
According to a government website, “large crocodiles are frequently seen” in the area.