A man has died in police custody despite officers tasering him in an attempt to stop him self-harming.

Northern Territory Police officers attached to the Joint Anti-Child Exploitation Team executed a search warrant about 7am on Friday at the 62-year-old man’s home south of Darwin.

About an hour later, police deployed a taser in an attempt to prevent the man harming himself.

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An officer injured a hand trying to disarm the man, NT Police said.

The man’s wife was present.

Officers provided first aid and paramedics treated the man, but he died at the scene.

A crime scene has been declared and the street closed.

Investigations continue and the incident is being treated as a death in custody.

If you need help in a crisis, call Lifeline on 13 11 14. For further information about depression contact beyondblue on 1300224636 or talk to your GP, local health professional or someone you trust.