An investigation of Huawei Technologies Co.’s latest AI offering has unearthed an advanced processor made by Nvidia Corp. manufacturing partner Taiwan Semiconductor Manufacturing Co., suggesting that China is still struggling to reliably make its own advanced chips in sufficient quantities.

Taiwan Semiconductor Manufacturing Company notified the U.S. that one of its chips had been found in a Huawei product after tech research firm TechInsights took apart the product, a person familiar with the matter said,

TSMC has advised the U.S. that there was an attempt by Huawei to violate sanctions against China restricting the export of AI chips to China, as the probe that could affect Apple chip production rolls on.