TSMC has denied a report that it is under investigation by the U.S. Commerce department for supposed dealings with Chinese tech company Huawei. The statement comes a day after a separate report claimed that a TSMC chip had been found in a Huawei product.

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.

Possible export-controls violation benefiting mainland-based tech titan hit by American sanctions could lead to penalties.