Raytheon Technologies Corp said it is a target of a U.S. Department of Justice investigation into hiring practices in the aerospace industry, the U.S. aerospace and defense firm said in a filing on Friday. No criminal charge has been filed against the company or its affiliates, the company added. Raytheon had received a subpoena in late 2019 focused on alleged hiring restrictions between Pratt & Whitney, a subsidiary of Raytheon, and some of its suppliers of outsourced engineering services. It also included requests regarding Collins Aerospace. A former Pratt & Whitney employee and some other employees of outsourced engineering suppliers were charged in December for restricting the hiring and recruiting of engineers and skilled laborers in a way that violated antitrust laws. “Raytheon Technologies is committed to complying with applicable state and federal laws and is cooperating fully with the government’s inquiry,” the company said in a statement.