Police say no charges will be laid in relation to the crash on 7 November last year at Mohaka near Wairoa where three Mongrel Mob members died.
Police have established that a second vehicle was involved. Forensic tests and crash analysis reports have been completed and as a result, no charges are being considered against the driver of the second vehicle.
Police sought an independant review of the crash from a specialist crash investigator. He agreed with police's view that there was no evidence to support charges against the driver of the second vehicle.
Police said they cannot provide any more detail about the investigation as the matter has now been referred to the coroner.