WASHINGTON (Reuters) - The United States on Tuesday said it would investigate imports by three Chinese chemical companies that make high-potency sweeteners amid a complaint by Celanese Corp that the companies were violating U.S. law.

The U.S. International Trade Commission, in a statement, said its investigation's targets are Suzhou Hope Technology Co, Anhui Jinhe Industrial Co, Vitasweet Co.

(Reporting by Susan Heavey and David Alexander)