A 5.48 metre (18 ft) Australian crocodile that held the world record as the largest crocodile in captivity has died, a wildlife sanctuary said on Saturday. He was thought to be more than 110 years old.

Cassius, weighing in at more than one ton, had been in declining health since Oct. 15, Marineland Melanesia Crocodile Habitat said on Facebook.

“He was very old and believed to be living beyond the years of a wild Croc,” according to a post by the organisation, based on Green Island near the Queensland tourist town of Cairns.