China announced a wide range of measures on Tuesday targeting U.S. businesses including Google , farm equipment makers and the owner of fashion brand Calvin Klein, minutes after new U.S. tariffs on Chinese goods took effect.

China hit back at the U.S. with tariffs of its own. Beijing also said it was starting an antitrust probe into Alphabet’s Google.

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.

HONG KONG (AP) — The Chinese government’s move to open an antitrust probe into Google is the latest development in a long and tangled relationship that goes back to the early 2000s.

Beijing to levy tariffs of 10 to 15 per cent on some American products and restrict exports of key minerals as US trade tensions escalate.