WASHINGTON (AP) — A Republican senator is calling for a delay in confirming President Barack Obama's pick for CIA director until the administration provides answers on the deadly Sept. 11 assault in Libya that killed the U.S. ambassador and three other Americans.

Sen. Lindsey Graham, a member of the Armed Services Committee, said Tuesday that his support for delaying the nomination was not a reflection on John Brennan, whom Obama tapped on Monday, but rather the only recourse to get information on the raid on the diplomatic mission in Benghazi.

"The stonewalling on Benghazi by the Obama administration must come to an end," Graham said in a statement.