Northern Territory Department of Corrections prisoner 51-year-old man David Namatjira has failed to return from his leave permit in Alice Springs.

David failed to return to his designated pickup location at 4pm today and his whereabouts are currently unknown.

NT Police are now investigating.

Anyone with information on David’s whereabouts is urged to contact police on 131 444 or anonymously through Crime Stoppers on 1800 333 000.