Plastic bag manufacturers are secretly producing the banned carriers at night in a bid to outsmart the authorities, the environment authority has said.
The National Environment Management Authority (Nema) said it was conducting night raids to crack down on manufacturers who are still in business four months after the ban on plastic bags.
Plastics ban now extended Manufacturers have adopted discreet methods such as operating behind shut doors and under the cover of darkness.
On Monday Nema impounded around two tonnes of the bags being packaged for the market.
Nema Nairobi County Director of Environment Njoki Mukiri told says that some sly manufacturers had put up notices, saying they were no longer in business but their machines were still running.