NZ Customs has announced the introduction of robots that can be used to search underwater for drugs to help prevent illegal substances from entering New Zealand. 

"We know that we've had, sea chests and we've had things attached to ships, and that's an overseas trend as well," Customs Minister Casey Costello told Heather du Plessis-Allan.

"So, that means that we can search more vessels and we can reduce the need for dive teams to go down."

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