On Sept. 11, 2012, four Americans were killed, including U.S. ambassador to Libya Chris Stevens, when terrorists attacked the U.S consulate in Benghazi.

Republicans have criticized the administration for not delivering a consistent message on what truly happened in Libya and more recently for reports that the administration decided not to send a military task force to help those inside the consulate.

“I have no patience for the constantly changing stories coming out of the White House and even less for the empty explanations from senior administration officials who cannot or will not explain why things went wrong,” Murkowski said.

Last week, Senate Intelligence Committee Chairwoman Dianne FeinsteinDianne Emiel FeinsteinSunday Shows Preview: Emmanuel Macron talks ahead of state dinner CIA declassifies memo on nominee's handling of interrogation tapes Senate panel punts Mueller protection bill to next week MORE (D-Calif.) announced that she would hold a hearing on the attack in Benghazi after the election. The House has already started an investigation.

Murkowski demanded that someone in the White House be held accountable for the incident.

“I strongly encourage the White House to step up and take responsibility for any mistakes made,” Murkowski said. “Even more importantly, though, I ask them to step forward with the truth of what happened, didn’t happen and why — so that the American people have the full story.”

Last month, Secretary of State Hillary ClintonHillary Diane Rodham ClintonClinton takes swipe at 'false equivalency' in media coverage of 2016 election Former presidents, first ladies come together to honor Barbara Bush Romney: Parts of Comey book read 'too much like a novel’ MORE said she'd take responsibility for the lack of security during the attack in order "to avoid some kind of political 'gotcha' " for the administration. 

In an interview with MSNBC that aired last week, Obama vowed he would find the people responsible and urged lawmakers to allow the administration to conduct a full probe into the attack, acknowledging that as commander in chief, he was “ultimately” responsible for the security of U.S. diplomats.