The U.S. Postal Service is disputing claims in a lawsuit by former CBS News reporter Sharyl Attkisson concerning its possible involvement in the hacking of her computers. In a complaint recently filed with the D.C. Superior Court, Attkisson sues Attorney General Eric Holder and Postmaster General Patrick Donahoe for violating several of her constitutional rights, including her freedom of expression and freedom from unreasonable searches and seizures.

The suit is based on the Attkisson’s claims that her computers were compromised on numerous occasions after she started reporting on the government’s “Fast and Furious” gun-walking program in 2011. Throughout the alleged technological intrusions, Attkisson consulted security experts and commissioned forensics examinations of her systems. One such probe is abridged in Attkisson’s complaint as follows:

“Among other findings, Ms. Attkisson’s computer forensics expert has identified an unauthorized communications channel opened into her Toshiba laptop directly connected to an Internet Provider (IP) address belonging to a federal agency, specifically the United States Postal Service, indicating unauthorized surveillance.”

The postal service, the complaint goes on to say, has a “strong relationship with the FBI, Department of Homeland Security, and DOJ when conducting computer forensic actions.”

Asked about Attkisson’s contentions in the civil action, U.S. Postal Service spokeswoman Darlene S. Casey responded via e-mail, ““We have not received a copy of the complaint, but we do not believe the allegations reported in the media have any merit.” In 2013, the Justice Department issued this statement: “To our knowledge, the Justice Department has never compromised Ms. Attkisson’s computers, or otherwise sought any information from or concerning any telephone, computer, or other media device she may own or use.”