Suzuki Motor Corp. shares extended a slump after the automaker halted production of a popular car model, with local media reporting China’s export restrictions on rare earths are behind the disruption.

Suzuki Motor's suspension of production of its flagship Swift subcompact is due to China's rare earth restrictions, two people familiar with the matter said, becoming the first Japanese automaker to be affected by the export curbs.

Suzuki halted Swift production in Japan due to China's rare earth export restrictions. China's control over these critical minerals, used in various industries, is disrupting global supply chains.