Attorneys for Taylor Swift are threatening legal action against the Florida college student who tracks the private jets of celebrities and public figures.

Jack Sweeney confirmed on Tuesday that he received a cease-and-desist letter threatening legal action from attorneys for Swift about the social media accounts he runs that track Swift’s flights.

The letter claims this poses an “imminent threat to the safety and wellbeing” of Swift. It also accuses Sweeney of disregarding the public safety of others “in exchange for public attention and/or requests for financial gain.”

Sweeney is the same person who famously drew ire from billionaire Elon Musk for tracking his jet travels online. Musk, who owns X, disbanded Sweeney’s account “@ElonJet” on the social media platform formerly known as Twitter in December 2022.

Sweeney, who was let back on the X platform, also runs accounts that track the private jet movements of Mark Zuckerberg, Bill Gates, and a spate of other celebrities and public figures. Musk has previously said the accounts pose a “security risk” for him and his family.