Federal prosecutors in Brooklyn have unsealed a 13-count indictment against the Chinese telecommunications giant Huawei Technologies, alleging the company took part in a long-running scheme in which it deceived the U.S. government about its business dealings with Iran.

The U.S. Attorney’s Office for the Eastern District of New York alleges that Huawei, the company’s subsidiaries in the U.S. and Iran and Wanzhou Meng, the company’s chief financial officer, lied to the U.S. government and global financial institutions about Huawei’s ties to Skycom, an unofficial subsidiary in Iran.