The NEMA officers were forced to flee Mutithi market, after a furious mob attacked them for arresting traders who were found using banned plastic bags.

The Kenyan government last year imposed the world's toughest law against plastic bags through a Kenya Gazette notice signed by Environment cabinet secretary Judy Wakhungu that outlawed the manufacture, import, sale or use of plastic carrier bags in the country.

A fine of Sh50,000 was imposed on anyone found with plastic shopping bags while manufactures flouting the rule will be fined between Sh2 million and Sh4 million.

The ban came into effect in August 28th 2017.