Discount giant Smart Club, and grocery chains ICA and Rimi have now withdrawn illegal tuna that could make consumers extremely ill.
A consumer watchdog television program (Consumer Inspectors) revealed that laboratory tests had confirmed the sale of illegal fish.
The tuna was artificially colored using carbon dioxide gas, a technique banned in the European Union market and Norway, because the method can disguise old or poor quality fish - the fish can be thawed and refrozen repeatedly without losing its color.
