Death of Queensland's largest crocodile in 30 years could spark violent power grab

Killing of the 5.2-metre male reptile, one of the biggest ever seen in the state, could spark a dangerous battle for dominance between remaining crocodiles

A massive saltwater crocodile - said to be one of the biggest ever seen in Queensland - has been found shot dead and experts fear its demise could lead to other crocodiles becoming more aggressive as young males fight for supremacy.

Police and state environmental officers are investigating after the 5.2-metre male reptile was found with a bullet in its head in the Fitzroy river in Rockhampton on Thursday.