Mother of slain officer blames WH for 'outright lies'

But Smith said after first receiving condolences from the president and other top-level cabinet officials, "not one person has ever, ever gotten back to me."

"Obama told me. Hillary promised me. Joe Biden — Joe Biden is a pressure. He was a real sweetheart. But he also told — they all told me that — they promised me. And I told them please, tell me what happened. Just tell me what happened," Smith said.

Sean Smith perished along with U.S. Ambassador Chris Stevens and former Navy SEALs Tyrone Woods and Glen Doherty in the attack on the American consulate.

Smith's mother said she told the Obama administration to "please don't give me any baloney that comes through with this political stuff."

"I don't want political stuff. You can keep your political, just tell me the truth [of] what happened," Smith said. "And I still don't know. In fact, today I just heard something more, that he died of smoke inhalation."

Asked by CNN host Anderson Cooper if she still did not know her son's cause of death, she said she didn't "even know if that's true or not."

"No, I don't. I don't know where. I look at TV and I see bloody hand prints on walls, thinking, my God, is that my son's? I don't know if he was shot. I don't know — I don't know. They haven't told me anything. They are still studying it. And the things that they are telling me are just outright lies," Smith said.

For more on Smith's comments, click here.