JAKARTA, Indonesia — Indonesian authorities on Thursday named a Chinese executive of a metal smelting company as a suspect in a cesium-137 contamination case that resulted in the recall of some exports to the U.S.

Lin Jingzhang, who is a director of PT Peter Metal Technology (PMT), has been designated as a suspect, Bara Hasibuan, a spokesperson for the investigating task force, said.

“The Certain Crimes Directorate of the Indonesian National Police’s Criminal Investigation Unit has named Lin Jingzhang, a citizen of the People’s Republic of China who serves as director of PT. Peter Metal Technology, as a suspect,” said Hasibuan.

Investigators have struggled to contact representatives of the metal-processing factory, which is located on the Cikande Industrial Estate, in Banten province on

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