The U.S. Secret Service has placed one of its agents on administrative leave amid an investigation into the alleged leak of Vice President JD Vance's travel schedule to the press, according to reports from CNN and the UK-based Sun.

The unidentified agent is suspected of having served as a source for an MS NOW (formerly MSNBC) report detailing Vance's travel plans. The agent is now under internal review by the Secret Service's internal affairs division. CNN reported that a second source confirmed officials had identified an individual believed to have been responsible for leaking information about the vice president.

Travel schedules for senior U.S. officials are treated as sensitive because protective details use timing, routes, venues, and staffing plans to reduce security risks. Alleged disclosures involving a protectee's movements therefore carry operational significance beyond ordinary workplace leaks.

Sun reporter Juliana Cruz Lima wrote on Thursday morning: "The agent, who has not been publicly identified, allegedly served as a source for an MS NOW report about Vance's travel schedule, according to CNN. They are now said to be under internal review by the U.S. Secret Service's internal affairs division."

The MS NOW report that triggered the investigation claimed that agents assigned to Vance's protective detail had grown frustrated by the demands of safeguarding the vice president, his wife Usha, and their three young children. Last-minute travel changes reportedly disrupted agents' time off and personal plans.

On July 15, MS NOW reporters Carol Leonnig and Vaughn Hillyard described a "morale problem" among USSS agents assigned to protect Vance and his family. According to MS NOW sources, agents "have shared concerns internally about Vance and his office pressing them for trips and assignments that some agents consider an inappropriate or even unprecedented use of government resources compared to prior vice presidents."

The suspected leaker has not been fired but will remain on administrative leave while the probe is conducted. Lima noted: "It is not yet clear whether the employee will face disciplinary action or criminal charges."

The investigation comes amid a broader crackdown by the Trump administration on what it has characterized as unauthorized leaks to the press. Earlier in July, four New York Times reporters were subpoenaed to testify before a federal grand jury over their reporting on security features aboard President Donald Trump's new presidential aircraft, which was gifted by Qatar.

Following the publication of the MS NOW story, Secret Service Deputy Director Matt Quinn defended the work carried out by agents protecting America's leaders.

Separately, Forbes reported early Thursday that the USSS has recorded a 40 percent increase in investigations of threats against protectees in 2026.

The Secret Service, a federal law enforcement agency housed within the Department of Homeland Security, is responsible for protecting the president, vice president, their families, and other designated individuals, as well as investigating financial crimes including counterfeiting and fraud.