Thai officials on Wednesday said they seized 238 tonnes of illegally imported electronic waste from the US at the port of Bangkok, one of the biggest lots they’ve found this year. 

The waste, which came in 10 large containers, was declared as mixed metal scrap but turned out to be circuit boards mixed in a huge pile of metal scrap, said Theeraj Athanavanich, director-general of the Customs Department. The waste was found on Tuesday after the containers became the subject of a routine random inspection, officials said.