Leader of Australian territory where girl was killed by crocodile says species cannot outnumber region's population

Crocodile numbers in Australia's Northern Territory must be either maintained or reduced and cannot be allowed to outstrip the human population, the territory's leader said after a 12-year-old girl was killed while swimming.

The crocodile population has exploded across Australia's tropical north since it became a protected species under Australian law in the 1970s, growing from 3,000 when hunting was outlawed to 100,000 now. The Northern Territory has just over 250,000 people.

The girl's death came weeks after the territory approved a 10-year plan for the management of crocodiles, which permits the targeted culling of the reptiles at popular swimming spots but stopped short of a return to mass culls. Crocodiles are considered a risk in most of the Northern Territory's waterways, but crocodile tourism and farming are major economic drivers.