The Northern Territory Police Force has arrested a 35-year-old male in relation to an incident that occurred this morning in Humpty Doo.

Around 7:50am, the Joint Emergency Services Communication Centre received a report that a male was allegedly making threats against a secondary school on Challoner Court. The school subsequently went into lockdown.

Police attended and the alleged offender was located in his vehicle on Challoner Street. The 35-year-old, known to the school, was arrested and remains in police custody.

A crossbow was located and seized from inside the vehicle during the arrest.

Investigations are ongoing.

Police urge anyone with information about the incident to make contact on 131 444. Please quote reference number P25331519. Anonymous reports can be made through Crime Stoppers on 1800 333 000 or via https://crimestoppersnt.com.au/.