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.

China said it had started an antitrust investigation of Google, which works with Chinese companies on smartphones and advertising outside the country.

China's response to a 10% tariff on imported goods enacted by the US on Feb. 4 includes an antitrust probe of Google and the targeting of other US companies including Nvidia and possibly chipmaker Intel.