A 50-year-old woman has been arrested and charged by Queensland Police following a "complex investigation" into the alleged contamination of strawberries in September.

Queensland authorities notified the public of a safety risk on September 12 after punnets of strawberries were found to contain needles.

Six brands of strawberries were affected across several states, with health authorities urging consumers to cut up the fruit before eating it.

Police in Queensland launched a national investigation with other government, law enforcement and intelligence agencies.