American Samoa's agriculture department has confiscated about 130 kilograms of locally-grown vegetables that allegedly breached regulations.
The department's acting director, Peter Gurr, says members of the public had complained about bok choy being sold a several stores, despite a ban on it.
Mr Gurr says the chemical residue found on the cabbages exceeded allowable levels, and there also traces of e-coli and bacteria from human or animal waste found on some of the vegetables.
He says some spinach and cilantro was also confiscated for the same reason, and farmers and landowners have been called in for a workshop on how to properly harvest and clean their produce.
