JAKARTA, Indonesia — Indonesia has opened a criminal investigation into the suspected source of radioactive contamination that forced recalls of exports of shrimp and spices to the U.S. and sneakers to the Netherlands, authorities said Wednesday.

The probe is centered on a metal-processing factory at the Cikande Industrial Estate, in Banten province on the island of Java. The smelting company, called PT Peter Metal Technology, is believed to be China-owned, according to investigators.

“The police have launched the criminal investigation,” said Bara Hasibuan, a spokesperson for the investigating task force.

The discovery of cesium 137 began earlier this year with an initial report submitted by Dutch authorities over traces of radiation found in shipping containers from Indonesian. The re

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