Northern Territory Police are calling for witnesses to an assault and robbery in Alice Springs in the early hours of this morning.

About 2:15 am, 4 Off-duty police officers, 3 female and a male, were walking along the Todd River walkway near the Stott Terrace bridge on their way to a hotel on Barrett Drive.

The 4 were approached from behind by a group of about 20 male youths who proceeded to assault them.

One female was pulled to the ground and had her bag stolen, another female was punched in the face and kicked multiple times and had her mobile phone taken while the male was also punched and kicked multiple times.

The group of 20 males then left the area with the 4 victims returning to their accommodation where they have called police.

Two female victims were later taken to Alice Springs Hospital for treatment of minor wounds.

Police are urging anyone who may have witnessed the incident or has information to make contact on 131 444 and please quote reference number P24181885.

Anonymous tips can also be made through Crime Stoppers on 1800 333 000 or via https://crimestoppersnt.com.au/.