Malaysia has returned 150 containers of plastic wastes, weighing 3,373 metric tonnes, to their respective country of origin since the third quarter of past year.
The South East Asian country has seen a sharp rise in foreign plastic waste since China - once the world's largest importer - announced a ban in 2017.
Yeo Bee Yin said Malaysia would take "steps to ensure" the country "does not become the garbage dump of the world".
The Minister said the containers had been sent back without the government incurring any costs, which had been borne by the companies responsible for importing the plastic waste illegally to Malaysia.
Since the government's declaration to refuse plastic waste in July 2018, a total of 4,120 tons of waste was returned, and 200 illegal plastic recycling factories were shut down in Malaysia.
43 of the containers were returned to France, 42 to the United Kingdom, 17 to the USA, 11 to Canada, 10 to Spain and the rest to Hong Kong, Japan, Singapore, Portugal, China, Bangladesh, Sri Lanka and Lithuania.
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The 150 containers hold 3,737 tonnes of plastic waste that were allegedly brought into the country "illegally", according to the Malaysian government.
"For now, none of the countries of origin have refused to accept the containers".
The breakdown of the 110 containers and their respective countries of origin are: U.S. (60), Canada (15), Japan (14), Britain (nine), Belgium (eight), and one each from Mexico, Hungary, France and Jamaica.
Meanwhile, the minister said despite the dropped in the number of illegal plastic recycling factories nationwide, the enforcement activity against such factories will continue.
"Enforcement action was taken on containers which contained plastic waste imported illegally", she said, citing the Basel Convention, an worldwide treaty created to restrict movements of hazardous wastes between nations.
Imports into Malaysia rose steadily from 20,000 tonnes per month at the beginning of 2017 to 110,000 tonnes per month in early-2018.