Four people, including a teenage girl, have been arrested over an alleged attack on a man who is in a critical condition with skull fractures after a street fight in Nightcliff on Monday involving about 30 people, some armed with weapons including poles, rocks and axes, NT Police said.

Serious Crime Unit Detective Senior Sergeant Trent Abbott said that just before 1.30pm on Monday, police received multiple reports of fighting near the intersection of Progress Drive and Phoenix Street in Nightcliff.

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