NT Police Force general duties members arrested a 22-year-old male in relation to a domestic violence incident that occurred in Johnston last night.

About 8pm, the Joint Emergency Services Communication Centre received a report that an incident was unfolding at a residential address, with a male assaulting a female known to him.

Neighbours, upon hearing the disturbance contacted Triple Zero and rendered assistance and provided first aid prior to St John Ambulance and police attending.

Upon police arrival, the offender was arrested and conveyed to Palmerston Watch House, where he remains in custody as investigations continue.

The victim, a 22-year-old female, was conveyed by St John Ambulance to Royal Darwin Hospital in a critical condition.

The Domestic Violence Investigation Unit has carriage of the investigation.

NT Police appreciate the intervention and aid provided by neighbours and urge anyone who may have witnessed the incident to contact police on 131 444. Please reference to job number P25138375.

If you or someone you know are experiencing difficulties due to domestic violence, support services are available, including, but not limited to, 1800RESPECT (1800737732) or Lifeline 131 114.