from secretary of state hillary clinton overnight. She is taking responsibility for security failures in the deadly attack in benghazi, libya, that left a u.S. Ambassador dead and three other... See More
from secretary of state hillary clinton overnight. She is taking responsibility for security failures in the deadly attack in benghazi, libya, that left a u.S. Ambassador dead and three other americans, as well. Abc's reena ninan spoke with hillary clinton and joins us from lima, peru, this morning. Good morning to you, reena. Reporter: Elizabeth, good morning. We sat down last night for an interview with the secretary of state. And we got answers for the first time on the situation in libya. Let me say this. We will track down whoever did this and hold them accountable. Reporter: Secretary of state hillary clinton appeared to fall on her sword. I take responsibility. I'm in charge of the state department. 60,000-plus people, all over the world, 275 posts. The president and the vice president, certainly wouldn't be knowledgeable about specific decisions that are made by security professionals. Reporter: In her first comments that the state department acknowledged the attack on chris stevens and the ambassador, the secretary of state said she, not the president, was responsible for lapses in security. In an interview with abc news, clinton, who is traveling in peru, acknowledged there were concerns about militants in libya. When did the u.S. Become aware of transnational extremists operating in eastern libya? We have long known that extremists have come out of libya. We understood there would be an effort to try to re-establish a presence of extremist bases and operations. It's having we were focused on and working on. Reporter: As for reports that the u.S. Has special operation forces in the region. Would the administration be willing to strike them before a u.S. Election? There's an intense effort in our government. And I think our track record is pretty good eventually, we will find you. Reporter: Secretary clinton told the president of peru, she's eager to get back quickly because she wants to watch tonight's debate.
This transcript has been automatically generated and may not be 100% accurate.