Northern Territory Police are investigating a structure fire which occurred in Sadadeen at approximately 5:57pm on Sunday evening.

NT Fire and Rescue Service attended the scene after smoke was reported coming from the residence.

Fire investigators remain on the scene.

Three people were seen leaving the vicinity of the residence at the time and police are asking for anyone who may have witnessed them or who may have any other information to notify police.

Anyone with information is urged to contact 131 444 or anonymously on Crime Stoppers on 1800 333 000.