Sept. 15 (UPI) -- China said that Nvidia has violated its anti-trust laws in a 2020 acquisition of an Israeli company.

China's State Administration for Market Regulation announced late last year that the company's acquisition of Mellanox violates the country's anti-trust laws. The SAMR approved the acquisition at the time, but now said Nvidia hasn't followed some conditions of the agreement. It hasn't said what conditions, though. SAMR said Monday that it will continue its investigation.

Nvidia shares dropped 2% on the news.

Negotiators from China and the United States are meeting in Madrid to discuss trade tensions between the two countries. Recently, the United States added 23 Chinese companies to a list of those blocked from buying U.S. technology because of security issues.

Related