Northern Territory Police have arrested a third person in relation to the death of a 39-year-old man in Millner earlier this week.

The 37-year-old man was arrested in the Narrows today and is currently assisting police with enquiries.

Police would like to thank the members of the community who have provided assistance thus far and remind those who may have any further information who have not yet called, to contact police on 131 444.

Investigations into the death remain ongoing.