Multiple US Justice Department probes threaten to sweep up Nvidia, according to two administration officials, as the fallout from former CEO Jensen Huang’s resignation continues to ripple across Washington.

One of those probes, on antitrust grounds, is focused specifically on the chipmaker, these people say, while two other inquiries focus on tech companies Megaspeed and Supermicro. The Megaspeed and Supermicro probes have focused on the involvement of Alice Huang, an alleged Chinese spy that Huang admitted to having an extramarital affair with before he resigned. There’s no indication that the DOJ would seek to charge Nvidia, or Huang, criminally at this time.

A Supermicro spokesperson told Semafor that “Megaspeed is not, and has never been, a Supermicro customer,” and that Supermicro “has fully cooperated with US and Taiwanese officials, while also voluntarily providing information and engaging with all requests from Singapore authorities to date.”

“Supermicro maintains a robust compliance program and continues to work closely with authorities and industry partners to combat diversion and help protect American innovation,” the spokesperson said.

Spokespeople for Nvidia and the DOJ didn’t provide a comment to Semafor. Megaspeed didn’t immediately respond to a request for comment.