The Northern Territory Police are investigating a single vehicle rollover near Hermannsburg that occurred overnight.
Early this morning, emergency services were notified of the rollover on Larapinta Drive, 6.5kms east of Hermannsburg.
One adult male was declared deceased at the scene.
Three adult males suffered various levels of injuries. All were conveyed to Alice Springs Hospital for assessment, with one of the victims in a serious condition.
Police are in attendance and traffic restrictions are in place; motorists are advised to avoid the area if possible as delays are expected.
A report will be prepared for the Coroner.