He said police were called and the pair were removed from the prison site.
"This is a great example of Corrections, Serco and police working together to stop the distribution of drugs in the community and in prisons," said Beales.
"Meth wrecks people's lives, and is often linked to a person's criminal offending.
"In a prison environment, prisoners who are affected by drugs can behave violently, and compromise the safety of staff and other prisoners."
Beales said Corrections staff worked hard to manage the introduction of contraband into prisons and a range of screening methods are used to prevent drugs, weapons, cellphones, tobacco and other prohibited items getting in.
Screening methods include 25 detector-dog teams operating across the country, x-ray technology, telephone monitoring of prisoners' calls and single points of entry to sites.
"We regularly monitor and update screening procedures to prevent contraband from entering prisons, and stay informed about new methods of concealment," Beales said.
"We also know that prisoners' families, friends and associates can feel pressured to bring contraband into prison.
"However, this serves as a reminder that there can be significant consequences for those who do."
Police confirmed that the two people removed from the prison had been charged.
A 29-year-old man and a 24-year-old woman from Mt Wellington are both facing a number of charges including possession of methamphetamine for supply and unlawfully carrying a firearm/weapon.
Both appeared in Manukau District Court and were remanded in custody until their next court date.
Anyone who has been asked to bring drugs into a prison should report it to anonymous crime reporting line Crimestoppers on 0800 555 111.
