On Friday night, CNN reported that a federal grand jury had approved the first charges in special counsel Robert Mueller's investigation into alleged collusion between Trump's presidential campaign and Russian actors.
Trey Gowdy, who is chairman of the House Oversight and Government Reform Committee, has slammed the inquiry for leaking news about the charges, which are reportedly still sealed under orders from a federal judge.
"It's kind of ironic that the people charged with investigating the law and the violations of the law would violate the law," he added.
"Make no mistake, disclosing grand jury material is a violation of the law. Somebody violated their oath of secrecy," Gowdy said.
Gowdy, a former state and federal prosecutor, represents South Carolina in the House of Representatives. He led the House Select Committee into events surrounding the 2012 terrorist attack in Benghazi inquiry, during which he criticized the Obama administration's "intentional," "coordinated" and "shameful" stonewalling of his investigation.