Police have seized a large number of firearms, cash, drugs and other items from a home in Grey Lynn, Auckland.
"The search and seizure was particularly pertinent as a number of items seized were consistent with what is required to set up a clandestine laboratory," said Sergeant James Cassin, part of the Auckland City West tactical crime unit.
A 28-year-old man has been charged with 18 offences relating to possession of drugs and equipment, possession of firearms, receiving and possession of police property and a restricted weapon.
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The man is due to appear in the Auckland District Court on Friday.
The raid was part of what police have called Operation Pencil, a crackdown aimed at preventing an increase in serious crime in central west Auckland.
The operation focuses on known priority crime offenders and high crime areas such as car parks, shopping malls, gas stations, and railway stations, according to police.