The unusual attention from TSMC and Taipei underscores the sensitivities around cutting-edge chip technology, which anchors Taiwan’s own geopolitical clout. Photo by Chiang Ying-ying/AP Photo/Postmedia files

Prosecutors have searched the homes of a former Taiwan Semiconductor Manufacturing Co. executive suspected of leaking trade secrets to Intel Corp. , signalling an escalation in the government’s criminal probe into the high-profile dispute.

Authorities showed up at the Taipei and Hsinchu residences of former Senior Vice President Lo Wei-jen Wednesday, the prosecutors’ office said in a statement, as Lo is suspected of breaching the national security law . Prosecutors also secured court approval to seize Lo’s stocks and real estate.

The action took place days after TSMC sue

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