The top-secret international spy ring known as Echelon will have to reveal whether it received details of illegal spying on Kim Dotcom.

The order for the intelligence network to reveal its secrets comes after a new judgment into the bungled handling of the case against the alleged internet pirate.

The High Court at Auckland ordered the police to produce details either proving or discounting the existence of a live video feed of the raid after contradictory evidence from a senior police officer.