Gowdy has pressed back previously on the demands for records, saying he does not want to impede the Special Counsel investigation.

Gowdy responded to Cummings’s letter late Wednesday, saying he did not believe the matter was in the jurisdiction of the House Oversight committee, but rather should be handled by the House Intelligence committee or the Special Counsel.

“What you allege here is a crime, squarely within the jurisdiction of the Special Counsel,” Gowdy wrote. “If you have evidence of a crime, you should provide it to the Special Counsel immediately.”

Cummings has argued that the Flynn plea deal should alleviate that concern. Cummings said he believes Republican leaders of the Oversight Committee should approve a subpoena so they can “pursue these allegations against General Flynn in a responsible way.”

The whistleblower is not named in the five-page letter that Cummings shared with ABC News on Wednesday, and is unlikely to identify him or herself, fearing retaliation. “I have spoken to this whistleblower, and I find this person to be authentic, credible, and reliable,” Cummings wrote.

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