** FILE ** This undated photo provided by the Federal Bureau of Investigation shows Fazul Abdullah Mohammed, the al Qaeda operative behind the 1998 U.S. Embassy bombings in Kenya and Tanzania. A Somali official said Saturday, June 11, 2011, that Mohammed was killed by security forces on Tuesday, June 7, 2011. (AP Photo/FBI, File)
FBI VIA ASSOCIATED PRESS
This photo shows a person outside an Islamic center in Jacksonville, Fla., this month. FBI agents investigating a May 2010 pipe-bombing and arson at the Islamic Center of Northeast Florida said the bomber was recorded by security cameras during an incident at the same center on April 4, 2010.
** FILE ** Heather Hodges, U.S. ambassador to Ecuador, speaks with Juan Carlos Toledo, Ecuadorean consul general in Miami, behind a display of pre-Columbian artifacts at the FBI's Miami field office in North Miami Beach, Fla., in September 2009. (AP Photo/Wilfredo Lee, File)
** FILE ** In this April 20, 2009, file photo, FBI agents escort Abdiwali Abdiqadir Muse into FBI headquarters in New York. Muse has admitted he's a modern-day pirate. He was sentenced to 33 years in prison. (AP Photo/Louis Lanzano, File)
FBI agents and Tucson area law enforcement officers scour the parking lot of the Safeway in Tucson, Ariz., on Monday, looking for evidence of Saturday's shootings. Two days after a mass shooting at the Safeway, the grocery store is closed and the parking lot a scene of intense law enforcement activity. (Associated Press)
FBI Director Robert S. Mueller III (left) listens as Pima County Sheriff Clarence Dupnik speaks on Sunday in Tucson, Ariz. Mr. Mueller was on hand to oversee the investigation of the shooting of Rep. Gabrielle Giffords, who was shot in the head a day earlier during a speech at a local supermarket. (Associated Press)
** FILE ** Former Illinois Gov. Rod Blagojevich, with his wife, Patti, talks to members of the media in Chicago on Aug. 17, 2010, after a federal jury found him guilty of one count of lying to FBI agents. (AP Photo/Kiichiro Sato, File)
This poster released by the FBI shows photos of individuals wanted by the FBI and shows Eastern European cybercriminals wanted on a variety of federal charges stemming from criminal activities, including money laundering, bank fraud, passport fraud and identity theft in New York. (Associated Press)
D.C. Mayor Adrian M. Fenty (second from right); Joseph Persichini Jr., assistant director in charge of the FBI's Washington field office (right); Metropolitan Police Chief Cathy L. Lanier; U.S. Attorney Jeffrey Taylor (second from left) and Detective Todd Williams attend a press conference on March 3, 2009, at which it was announced that an arrest warrant had been issued in the Levy case. (The Washington Times)
This undated photo provided by the Federal Bureau of Investigation shows Zahra Clare Baker, a 10-year-old North Carolina hearing-impaired girl with a prosthetic leg who is missing. The girl was last seen by her stepmother at 2:30 a.m. Saturday, Oct. 9, 2010. A fire was reported in the Bakers' backyard about 5 a.m.
Attorney General Eric H. Holder Jr. (left), accompanied by U.S. Attorney Rosa Emilia Rodriguez-Velez (right) of the District of Puerto Rico and FBI Executive Director Shawn Henry, answers questions during a news conference at the Justice Department in Washington on Wednesday, Oct. 6, 2010. Earlier in the day, FBI agents arrested scores of Puerto Rican police officers for allegedly aiding drug dealers. (AP Photo/Haraz N. Ghanbari)
"How do we develop the team between Department of Homeland Security, FBI, Cyber Command and others to work as a team to defend the nation in cyberspace?" asked Gen. Keith Alexander as he testifies on Capitol Hill on Thursday before the House Armed Services Committee hearing on cyberspace operations. (Associated Press)
PUGNACIOUS: Former Illinois Gov. Rod R. Blagojevich (left) was convicted in a Chicago federal court on Tuesday on one felony count of lying to the FBI. The jury could not reach on a verdict on 23 other counts. (Associated Press)
Former Illinois Gov. Rod R. Blagojevich talks defiantly to the news media at the federal court building in Chicago on Tuesday, with wife Patti next to him, after being convicted on one felony count of lying to the FBI. But prosecutors said they would retry him on the 23 other corruption and fraud charges. (Associated Press)
Adnan Shukrijumah, 35, is a suspected al Qaeda operative who lived for more than 15 years in the U.S. The FBI says he has become chief of the terror network's global operations. (FBI via Associated Press)