Jamal Mabrouk, a member of the February 17th Brigade, told CNN that he and a battalion commander had a meeting about the economy and security.
He said they told the diplomats that the security situation wasn't good for international business.
"The situation is frightening, it scares us," Mabrouk said they told the U.S. officials. He did not say how they responded.
Mabrouk said it was not the first time he has warned foreigners about the worsening security situation in the face of the growing presence of armed jihadist groups in the Benghazi area.
That in sharp contrast to what the White House was saying on Friday, as CNN also reports:
The White House said Friday there was no indication before the attack in Libya this week that something was in the works beforehand.
"We were not aware of any actionable intelligence indicating that an attack on the U.S. mission in Benghazi was planned or imminent," presidential spokesman Jay Carney said.
The comment came as a top Libyan official and some within Congress and other aspects of the U.S. government said there are signs now that the attack on the consulate that killed the ambassador and three other Americans was not a spontaneous outgrowth of a mob angered by an anti-Muslim film.
Libya's president says he believes al-Qaida is behind a deadly attack in eastern Libya that killed U.S. Ambassador Chris Stevens and three other U.S. staffers.
In an exclusive interview with NPR in Benghazi, President Mohammed el-Megarif says foreigners infiltrated Libya over the past few months, planned the attack and used Libyans to carry it out.
Megarif says that over the past few months, foreigners took advantage of the security vacuum and flowed into the country from Mali and Algeria. I ask if this attack was over an anti-Muslim film that sparked violent protests across the Muslim world. He shakes his head.
"The idea that this criminal and cowardly act was a spontaneous protest that just spun out of control is completely unfounded and preposterous," he says. "We firmly believe that this was a precalculated, preplanned attack that was carried out specifically to attack the U.S. Consulate."
The attackers used the protesters outside the consulate as a cover, he says.
"The intention was there from the beginning, for it to take this ugly barbaric, criminal form," he says.
Megarif claims evidence shows that some elements of Ansar al-Sharia, an extremist group in eastern Benghazi, were used as tools by foreign citizens with ties to al-Qaida to attack the consulate and threaten Libya's stability.
At what point will the United States government come to the same conclusion?
And at what point will Obama's skipping nearly 50% of his intelligence briefs come into play?