Counties Manukau major crime team Detective Senior Sergeant Albie Alexander said the convictions were the result of a dedicated effort by staff who worked tirelessly on a lengthy and complex drug operation.
"Methamphetamine destroys lives, and the huge amount seized by police had the potential to cause a significant amount of harm and damage to our community.
"Unfortunately this is not an isolated case and there will continue to be those who attempt to smuggle methamphetamine into the country.
"The seriousness of this offending is at the highest level and are reflected in the penalties passed down from the courts.
"What was particularly striking about this case was that the main offender and mastermind in this smuggling operation (Le'Ca), exploited two of his own family members by involving them in his criminal activity.
"We will strive to bring these offenders to account and do everything in our power to get methamphetamine and other dangerous drugs off our streets and keep our communities safe."
Customs investigations manager Bruce Berry said disrupting the supply of drugs was top priority for Customs, and dismantling the criminal syndicate was the ultimate aim.
"Customs was pleased to support police in this operation where one small seizure led to a much larger seizure and the arrests. This was a good result for all involved."
