A Twitter fight between House Republicans erupted when it was reported that House Republican Conference Chair Liz Cheney and Ohio Republican Rep. Mike Turner donated to Kentucky Rep. Thomas Massie’s Republican primary challenger.

“Reps. Liz Cheney (the No. 3 House Republican) and Mike Turner (Ohio) donated to Rep. Thomas Massie’s Republican primary opponent Todd McMurtry through their leadership PACs, per McMurtry campaign-finance filing,” Bloomberg Government reporter Greg Giroux tweeted.