Northern Territory Police have arrested two people in relation to a structure fire in Wadeye this morning.

Around 7am, police received reports that the trade centre within the Wadeye school had been set alight.

There was nobody in the building at the time of the fire and the school was shut down. No injuries have been reported.

A fire investigator and detectives have deployed from Katherine.

A 20-year-old male and a 21-year-old female have been arrested and are assisting police with their enquiries.

Investigations remain ongoing.

Police urge anyone with information to contact 131 444.

Anonymous reports can also be made through Crime Stoppers on 1800 333 000 or via https://crimestoppersnt.com.au/.