Malaysia has announced an immediate and complete ban on the import of electronic waste, declaring it will no longer allow itself to become a dumping ground for hazardous waste from abroad.

The Malaysian Anti-Corruption Commission (MACC) said late Wednesday that all electronic waste, or e-waste, has been reclassified under the “absolute prohibition” category with immediate effect. The move removes the discretion previously held by the Department of Environment to approve exemptions for importing certain types of e-waste.

MACC chief Azam Baki said e-waste imports are now strictly prohibited and pledged firm and coordinated enforcement to prevent illegal shipments from entering the country.

Malaysia has struggled for years with large volumes of imported e-waste, much of it suspected to be illegal and harmful to both human health and the environment. Authorities have seized hundreds of containers at ports in recent years and ordered many shipments to be returned to their countries of origin.

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Environmental groups have repeatedly called for tougher measures, warning that e-waste such as discarded computers, mobile phones and household appliances often contains toxic substances and heavy metals, including lead, mercury and cadmium, which can contaminate soil and water if mishandled.

The ban comes as authorities expand a corruption investigation linked to e-waste management. Last week, the MACC detained and remanded the director-general of the Department of Environment and his deputy over alleged abuse of power and corruption related to e-waste oversight. Investigators have also frozen bank accounts and seized cash connected to the case.

Meanwhile, Malaysia’s Home Ministry said in a social media post that the government would step up efforts to curb e-waste smuggling.

“Malaysia is not a dumping ground for the world’s waste,” the ministry said, adding that e-waste poses a serious threat to the environment, public health and national security.