The National Cannabis Crime Operation, run between November 2004 and April 2005, destroyed about 108,000 cannabis plants across New Zealand.[1] The operation led to 564 arrests, the seizure of 46 firearms and the recovery of an estimated $230,000 worth of stolen property.[1] Detective Senior Sergeant Scott McGill credited the public, whose tip-offs located plots and offenders, and dedicated the results to the memory of Detective Hughes and pilot Chris Scott, who died in a plane accident in Queenstown while working on the operation.[1]

Detective Travis Hughes of Queenstown and pilot Chris Scott of the Bay of Plenty were killed when their single-engined Cessna 172 crashed in the Gibbston Valley area during a routine cannabis reconnaissance flight.[2] Police named the two men on the morning of 30 January 2005; the Cessna had been flying in good weather with no indication then of the cause, and a Transport Accident Investigation Commission inspector was due at the crash site.[2]