Northern Territory Police are responding to a report of a serious traffic crash north of Tennant Creek.

Initial information indicates police received a report of a single vehicle rollover on the Stuart Highway 77km north of Tennant Creek earlier this morning.

The injuries of the occupants of the vehicle in the crash is unknown at this stage.

One lane of the highway have been closed while police investigate, however some traffic delays can be expected.

Motorists are advised to take Churchills Head Road as an alternate route.

Due to the limited communications in the area there is no further information available at this stage.