(Bloomberg) -- China’s top anti-graft watchdog has begun an investigation of former Tsinghua Unigroup Chairman Zhao Weiguo, who becomes the latest high-profile figure ensnared in an industry-wide corruption dragnet.

The former executive’s case has been handed to prosecutors, who will file charges, the Central Commission for Discipline Inspection said in a statement on Monday.

Zhao is among the more prominent names swept up in a recent flurry of graft probes, reflecting how China’s top leadership has grown increasingly frustrated with a years-long failure to develop semiconductors that can replace US circuitry. The investigations sent shockwaves through an industry long accustomed to top-level support: Xi Jinping’s government had allocated more than $100 billion to build up a domestic chip sector so the country could break its dependence on the West.

Caixin reported in July that officials had begun an investigation into Zhao, who served as chairman of the company affiliated with the prestigious Tsinghua University, Xi Jinping’s alma mater. That company — once regarded as one of China’s national champions in semiconductors — collapsed under a mountain of debt. Zhao then publicly fought a $9 billion bailout of Unigroup, before he was ousted from the group.

Read more: China Graft Probes Stem From Anger Over Failed Chip Plans

A key area of scrutiny in the other probes was the National Integrated Circuit Industry Investment Fund — known as the Big Fund — which had become Beijing’s primary vehicle for doling out capital to the country’s chipmakers. The nation’s top anti-graft agency had previously announced investigations into several executives who helped manage the Big Fund’s assets.

Senior officials are angry at how tens of billions of dollars funneled into the industry over the past decade haven’t produced the sorts of breakthroughs that emerged from previous national-level scientific endeavors. Many officials feel Washington, which has steadily ratcheted up restraints on China, has been able to successfully contain its technological ambitions.

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