A number of people who had their personal information used to post anti-net neutrality comments on the Federal Communications Commission’s website are asking for the commission to investigate.

The request comes in the form of a letter sent to the FCC Thursday by activist group Fight For the Future on behalf of more than a dozen people who say their identities were used without their permission to leave comments on the FCC’s proposal to change current net neutrality protections.

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The letter refers to an apparent influx of automated comments that have posted the same anti-net neutrality message more than 450,000 times. The posts appear to use information gathered from real estate websites to attach personal information—including names, addresses, and contact information—to the comments without permission.

“Whoever is behind this stole our names and addresses, publicly exposed our private information without our permission, and used our identities to file a political statement we did not sign onto,” the letter, which was address to FCC Chairman Ajit Pai, reads. “Hundreds of thousands of other Americans may have been victimized too.”

The group has called on the FCC to investigate the situation to see if the comments are a violation of the law for “making false statements” and has requested the FCC remove the comments and release any information it has about the origins of them.

Read: FCC Net Neutrality News: A Bot Is Flooding Commission's Website With Anti-Net Neutrality Comments

The letter also observes the comments are in support of Chairman Pai’s plans to roll back net neutrality protections by undoing the FCC’s 2015 decision to classify the internet as a public utility under Title II of the Communications Act, and suggests “it may be convenient” for the Chairman to ignore the comments in attempts to bolster his own position.

“As chairman of the FCC, an independent federal agency, it is your responsibility to maintain public trust, especially while your agency is fielding comments on the future of the free and open Internet, an issue that millions of Americans care deeply about,” the group said.

The request marks the latest in the saga of peculiar occurrences surrounding the FCC comment system since Chairman Pai made his proposal to reclassify the internet as a Title I information service.

The comment site came under siege by a DDoS, or distributed denial-of-service, attack following a segment on John Oliver’s HBO show Last Week Tonight. The attack made it impossible for people to leave comments just after Oliver called for people to show their support for current net neutrality protections.

The FCC has thus far refused to produce any evidence of the DDoS attack despite a number of organizations requesting the commission do so.

Shortly after the DDoS attack, the influx of identical comments supporting Chairman Pai’s proposal began appearing on the FCC’s site. Several publications have approached the people whose names are attached to the comments and learned they did not post them.