Auckland police have recovered more meth-laced lollies overnight, and are investigating a report someone tried to sell one.

The fake Rinda pineapple sweets were donated to Auckland City Mission - which unwittingly distributed them in food parcels.

Police have retrieved another 13 since yesterday, bringing the total to 29.

Massey University's Professor Chris Wilkins suspects Mexican cartels may have been behind this incident.

"The Mexican cartels are particularly innovative and have expertise in smuggling, because they have been, for many decades, transporting drugs across the borders of the US." 

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