Rep. Trey Gowdy, chairman of the House Select Committee on Benghazi, struck back Friday at “factual inaccuracies” in a Pentagon letter sent last week that accused his panel of employing overly aggressive tactics to secure witnesses and documents.

Gowdy accused Stephen Hedger, assistant secretary of defense for legislative affairs, of drafting and leaking a partisan letter that “intentionally mischaracterizes” his committee’s probe. Hedger’s letter had cited several requested interviews that the Pentagon felt were “unnecessary even for a comprehensive investigation.”