According to documents released Tuesday, the FBI hid the extent of anti-Catholic action by some lawmakers against church residents during the Biden administration, although then-institutional director Christopher Wray told Congress that the matter was limited to a 2023 memorandum.

R-Iowa Senator Chuck Grassley, who chairs the Senate Judiciary Committee, said the documents he said showed that the FBI was engaged in an investigation into traditional Catholics. During his tenure, Wray described the matter as part of a memo prepared by the FBI Office of Richmond, Virginia.

"I am determined to get into the bottom of the Richmond memorandum and the FBI's contempt for oversight in the last administration," Grassley said in a statement. "I look forward to continuing to work with you to restore the FBI's excellence and once again prove that justice can and must be managed fairly and evenly, turning a blind eye to whether we are Democrats or Republicans, believers or non-believers."

Top FBI boss Kash Patel

Grassley made his findings in a letter Tuesday to FBI director Kash Patel, while frustrated at the agency's handling of Wray's "anti-Catholic" memorandum, allegedly lacking transparency. Wray told Congress legislators that the memorandum was a single product of a single field office.

Despite Wray's claim that the memorandum is a single product, the FBI found 13 other FBI documents and five FBI annexes using the term "Radical Traditionalist Catholics" and cited the Southern Poverty Law Center (SPLC).

The FBI told Fox News Numbers that it received a letter from Grassley but declined to comment further.

During his testimony to lawmakers, Wray did not disclose the existence of the second product on the same subject.

“It’s a product from a field office, of course, we have these products and scores and when we found it, we took action.”

Blackburn said in the letter that the FBI's habit of endangered Americans said

The memorandum will be known when the whistleblower reveals it. The memorandum “in the radical traditionalist Catholic ideology, the interest of racially or racially motivated violent extremists will almost certainly bring new opportunities for mitigation,” the Republicans instantly criticized, who asked the agency to answer immediately.

Grasley said the second FBI memorandum drafted by the Richmond Field Distribution Agency duplicates the unfounded link between traditional Catholicism and violent extremism.

New documents released by Grassley show that the Richmond memorandum has been distributed to more than 1,000 FBI employees across the country. An email exchange showed the FBI's on-site office in Buffalo, New York, expressing concerns about the hate groups identified by the SPLC mentioned in Richmond Memo and is in its area of ​​responsibility.

Grassley said the FBI may rely on the "source of bias" used in the memo.

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"These letters focus on preparing memorandums, dissemination, and using sources of bias, such as the radical Southern Poverty Law Center, and later the FBI's misleading representative of Congress, including representatives of former director Wray," Grassley wrote.

Fox News Digital has contacted SPLC.