China said it was opening an antitrust probe into Google, part of a series of actions Tuesday that also included tariffs on U.S. coal and liquefied natural gas imports as well as restrictions on the export of certain metals.

The Chinese regulator said Google was suspected of violating the country's anti-monopoly law, and it had initiated an investigation into the company in accordance with the law. It did not offer any further details on the investigation or on what it alleged Google had done to breach the law.

China says it will investigate Google on suspicion of violating antitrust laws.