A woman has died from critical injuries she suffered in an alleged assault last month.

Neighbours called Triple-0 to report an incident unfolding in a home at Johnston, a suburb in the east of the NT satellite city, Palmerston, about 8pm on May 21.

The 22-year-old woman was found fighting for life when emergency services arrived.

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She was taken to the Royal Darwin Hospital in a critical condition.

The young victim has since died in hospital, NT Police said on Saturday.

Her exact cause of death remains unknown, but a report will be prepared for the coroner as part of ongoing investigations.

A 22-year-old man, known to the woman, was arrested at the scene when police responded to the disturbance last month.

He was taken to the Palmerston Watch House, and later charged with aggravated assault.

He appeared before Darwin Local Court last Monday, and remains before the courts.

Anyone with information is urged to contact Crime Stoppers.

If you or someone you know is impacted by sexual assault, domestic or family violence, call 1800RESPECT on 1800 737 732 or visit 1800RESPECT.org.au. In an emergency, call 000.

Advice and counselling for men concerned about their use of family violence: Men’s Referral Service, 1300 766 491.