Huawei Under Criminal Investigation Over Iran Sanctions

The Justice Department is investigating whether Huawei Technologies Co. violated U.S. sanctions related to Iran, according to people familiar with the matter—opening a new avenue of scrutiny amid wider national-security concerns over the Chinese cellular-electronics giant.

It’s unclear how far the Justice Department probe has advanced and what specific allegation federal agents are probing. A Huawei spokesman declined to comment.

Such a probe raises the stakes for Huawei, which is facing a series of moves by Washington to diminish its already-limited business dealings in the U.S. It could also have knock-on effects for its much larger business overseas, particularly in Europe.

Amid the heightened scrutiny in Washington, some allied countries, where Huawei has big business, have grown more wary.

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