While pleading with members of the public to desist the use of the banned bags, Simiyu said some 10 traders were arrested in Njoro market.
"In Eldoret, our officers unearthed a syndicate of major supplier of the banned plastic bags in various parts of the country including Nairobi. The bags are not approved for primary packaging," he said.
According to him, the syndicate was unearthed by one of the suspect who was arrested in possession of the bags inside a mini-supermaket.
The suspect volunteered to take the officers to the supplier in exchange for his freedom.
Another seven traders were arrested in at Ololulunga Market.
In Kisumu, the enforcement oifficers arrested eight traders with 16,000 pieces of the banned plastic bag in Ahero.
Simiyu said the officers will continue to enforce the ban to ensure a clean and safe environment across the countrywide.