Sen. Joe Lieberman (I-Conn.) split with his Senate allies John McCain (R-Ariz.) and Lindsey Graham (R-S.C.) on Sunday, telling "Fox News Sunday" that he doesn't think a special committee is needed to investigate the attack on the U.S. diplomatic mission in Benghazi.

Lieberman's comments come after McCain and Graham, two of the top leaders on foreign policy for the Republican party in the Senate, expressed interest in launching a select panel to investigate the attack on the U.S. diplomatic mission in Benghazi that killed four Americans in September. McCain and Graham -- as well as Sen. Kelly Ayotte (R-N.H.) -- have argued that such a committee would help streamline the investigations that are already underway. But on the news show on Sunday, Lieberman and Sen. Saxby Chambliss (R-Ga.) said an umbrella committee for the investigations is not necessary. Chambliss and Lieberman are involved in separate congressional investigations into the Benghazi attack.

“I respectfully separate from my two amigos on this one,” Lieberman said. “This was a tragedy, but doesn't rise to the level of 9/11/01. Our committees can handle this and come up with the answers."

"If for some reason our colleagues think when we're done we haven't done a good enough job, then let them make a special committee," Lieberman added.

Chambliss, the vice chairman of the Senate Intelligence Committee, noted he had “slight disagreement with my good friends” about the need for a select committee.

“The committees within the United States Senate are capable of investigating this," Chambliss said.

Earlier on HuffPost:

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  • U.S. President Barack Obama

    "The United States condemns in the strongest terms this outrageous and shocking attack. ... Make no mistake: We will work with the Libyan government to bring to justice the killers who attacked our people. ... We reject all efforts to denigrate the religious beliefs of others, but there is absolutely no justification for this type of senseless violence, none." (AP Photo/Evan Vucci)

  • British Prime Minister David Cameron

    "This senseless attack ended the lives of people who had worked selflessly alongside Libyans during their darkest days. ... We look to the new Libyan authorities to do all in their power, as they have pledged to do, to bring the killers to justice. Britain stands ready to assist Libya and the United States in that task. Above all, we will honor the memory of these dedicated people by continuing their work to help Libyans build a secure and free country." (AP Photo/Ben Stansall, Pool)

  • Hamid Karzai

    "The Islamic Republic of Afghanistan strongly condemns this inhuman and insulting action (the film) and shows its strong hatred against this action. Insulting the messenger of Islam is to insult the values of 1.5 billion Muslims around the world. This insulting action will cause enmity and contrast between religions and cultures in the world and will be a strong punch to peace and harmony between humans."(AP Photo/Ahmad Massoud / Xinhua, Pool)

  • Pakistan's Foreign Ministry

    "Such abominable actions, synchronized with commemoration of atrocious events like 9/11, provoke hatred, discord and enmity within societies and between peoples of various faiths. The event has deeply hurt the feelings of the people of Pakistan and the Muslims all over the world." (AP Photo/Brendan Smialowski, Pool)

  • Hezbollah

    The movie is an "immoral act that represents the highest levels of aggression against human rights that is represented by the respect of people's beliefs. ... The United Nations should issue laws that criminalize such acts similar to laws that criminalize anti-Semites." (AP Photo/Bilal Hussein)

  • NATO Secretary-General Anders Fogh Rasmussen

    "It is important that the new Libya continues to move toward a peaceful, secure and democratic future."(AP Photo/Shakh Aivazov, Pool)

  • Libyan interim President Mohammed el-Megarif

    "We extend our apology to America, the American people and the whole world." (AP Photo)