The Northern Territory Police Force is calling for information following an aggravated assault in Alice Springs last night.

At 10:30pm, the Joint Emergency Services Communication Centre received a report that a female aged in her 40s had been assaulted at the front of a residence on Bruce Street in Gillen.

It is alleged the victim attended the residence seeking help, when an unknown male offender approached her and struck her to the back of the head causing her to lose consciousness.

Police responded and the victim was conveyed to hospital by St John Ambulance for treatment.

The offender fled the scene prior to police arrival and remains outstanding.

Investigations are ongoing and police are urging anyone with information, including CCTV or dash cam footage from the area, to contact police on 131 444. Please quote reference P26316074. Anonymous reports can be made through Crime Stoppers on 1800 333 000 or via https://crimestoppersnt.com.au.