The Northern Territory Police Force has arrested a 30-year-old male following a domestic violence related aggravated assault in Katherine yesterday evening.

Around 8:50pm, the Joint Emergency Services Communication Centre received a report that a male was assaulting his partner aged in her 30s at a residence in Katherine South.

Upon attendance, police identified both the victim and her father, aged in his 60s, had allegedly been assaulted by the offender with a blunt object. Both suffered serious injuries and were conveyed to Katherine District Hospital by St John Ambulance.

The male victim was subsequently further conveyed to Royal Darwin Hospital in a critical condition.

The 30-year-old offender was arrested at the scene and assessed at Katherine District Hospital for minor injuries suffered prior to arrest. He remains in police custody and investigations are ongoing.

Anyone with information is urged to contact police on 131 444, quoting reference P26176273. Anonymous reports can be made through Crime Stoppers on 1800 333 000 or via https://crimestoppersnt.com.au.

If you or someone you know are experiencing difficulties due to domestic violence, support services are available, including, but not limited to, 1800RESPECT (1800 737 732) or Lifeline 131 114.