The United States said on Friday it would add 33 Chinese firms and institutions to an economic blacklist for helping Beijing spy on its minority Uighur population, or because of ties to weapons of mass destruction and China’s military, Reuters reported.

Seven companies and two institutions were listed for being “complicit in human rights violations and abuses committed in China’s campaign of repression, mass arbitrary detention, forced labor and high-technology surveillance against Uighurs” and others, the Commerce Department said in a statement.

Two dozen other companies, government institutions and commercial organizations were added for supporting procurement of items for use by the Chinese military, the department said in another statement.

The blacklisted companies focus on artificial intelligence and facial recognition.