Officials said they have no evidence to date that bin Laden's al Qaeda group has ever used anthrax.
CNN: U.S. officials still on 'high alert' for additional attacks
Still visible are the words Tawhid and Jihad, an al-Qaeda group, as well as promises of death to the disobedient.
Sources tracking militant Islamist groups in eastern Libya say a pro-al Qaeda group responsible for a previous armed assault on the Benghazi consulate is the chief suspect.
Washington says it fears nuclear proliferation will eventually put an atomic bomb in the hands of Islamic militants like the al Qaeda group, which Washington says was behind the Riyadh attacks.
The Associated Press reported in May 2012 that the CIA had stopped another attempt by an al Qaeda group in Yemen to have an underwear bomber blow up a U.S. passenger airplane.
Also, a regional anti-al Qaeda group, the Anbar Salvation Council has emerged which is a coalition touted by the United States and Iraq as a positive development in the war against al Qaeda in Iraq.
The BBC's correspondent in Jakarta, Richard Galpin, says security experts believe this latest closure of the embassy may be the result of further intelligence reports indicating the presence of another al-Qaeda group inside the country.
The general's position as loyal ally in the fight against global terror was further cemented this week with the arrest in Pakistan of Abu Zubaydah, thought to be the third-ranking member of the al-Qaeda group.
Mohammed al-Basha told CNN's "The Situation Room" that conversations with AbdulMutallab's former acquaintances have not yet turned up links to the local al Qaeda group, which has claimed responsibility for AbdulMutallab's attempt to bring down a Northwest Airlines flight on Christmas Day.
Earlier Friday, a U.S. official familiar with the latest intelligence information on the Boston Marathon bombings said initial indications were that the two suspects do not have direct links to any major al Qaeda group or affiliates, or to a new significant terrorist threat to the United States.
The kingdom recently announced it had killed the local leader of the al-Qaeda militant group.
The United States has designated al-Nusra Front as a pro-al Qaeda terrorist group.
U.S. officials consider Mr. Abu Ghaith a longtime member of the core al Qaeda terrorist group responsible for the Sept. 11, 2001, terror attacks.
It wasn't yet clear what specific charges he faces, but U.S. officials consider him a longtime member of the core al Qaeda terrorist group.
At that time, the White House said intelligence from many sources indicated the al Qaeda terror group might attempt to launch attacks against U.S. interests, claiming it was defending Muslims or Iraqis.
It wasn't yet clear what specific charges he would face, but U.S. officials consider him a longtime member of the core al Qaeda terrorist group responsible for the Sept. 11, 2001, terror attacks.
The WMD law also applies to "any national of the United States who, without lawful authority, uses or threatens, attempts, or conspires to use a weapon of mass destruction outside of the U.S.." In March 2013, former U.S. soldier Eric Harroun was charged under this part of the statute for allegedly conspiring to use a rocket propelled grenade while fighting with an al Qaeda affiliated group in Syria.
It appears that he joined an affiliate of al Qaeda, and that this group-al Qaeda in the Arabian Peninsula-trained him, equipped him with those explosives and directed him to attack that plane headed for America.
Last year, he declared his allegiance to al Qaeda and renamed his group from Unification and Jihad to al Qaeda in Iraq.
Ansar Dine, an al Qaeda-linked group claiming control of the city, is blamed for the attacks on historical landmarks.
Eleven members of the home-grown al-Qaeda-inspired group were eventually incarcerated on terror-related charges.
Nearly 60 people have been killed in an attack by an al-Qaeda-linked group on an army outpost in southern Yemen.
Despite the intensified attacks, Ansar al-Sharia, an al Qaeda-affiliated group, says it controls most strategic areas in the southern province.
The focus of these partnerships has been to quell an al Qaeda-linked group that uses a Malian forest as its base.
African Union and Somali troops are battling militants from Al-Shabaab, an al Qaeda-linked group that controls part of the nation's south.
The diplomats were taken hostage weeks before an al Qaeda-linked group said it had beheaded three of them and shot the fourth to death.
Washington (CNN) -- A former U.S. soldier has been arrested and charged with illegally using a weapon on behalf of an al Qaeda-affiliated group in Syria.
CNN: U.S. ex-soldier charged with using RPG for al Qaeda group
One-eyed veteran Islamist fighter Mokhtar Belmokhtar has claimed responsibility for the hostage-taking on behalf of his al Qaeda-linked group, according to Mauritania's Sahara Media news agency.
That is also a vital point for the US, which is particularly concerned about the possibility of any of its funding falling into the hands of the al-Qaeda-affiliated group.
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