This undated file photo, provided by the FBI shows Tashfeen Malik. A religious conservative who lived previously in Pakistan and Saudi Arabia, Malik joined her American-born husband of less than two years, Syed Farook, on Dec. 2, 2015, in donning tactical gear, grabbing assault weapons and slaughtering 14 people at his office holiday party in Southern California. (FBI via AP, File)
This undated photo provided by the FBI shows Mohamed Abdullahi Hassan, who turned himself in to authorities in Africa, the U.S. State Department said Monday, Dec. 7, 2015. A former Minnesota resident, Hassan joined al-Shabab in Somalia more than seven years ago and more recently went online to urge others to carry out violence on behalf of the Islamic State group, authorities said. (FBI via AP)
This undated photo provided by the FBI shows Tashfeen Malik. Malik and her husband, Syed Farook, died in a fierce gunbattle with authorities several hours after their commando-style assault on a gathering of Farook's colleagues from San Bernardino, Calif., County's health department Wednesday, Dec. 2, 2015. (FBI via AP)
This undated combination of photos provided by the FBI, left, and the California Department of Motor Vehicles shows Tashfeen Malik, left, and Syed Farook. The husband and wife died in a fierce gunbattle with authorities several hours after their commando-style assault on a gathering of Farook's colleagues from San Bernardino, Calif., County's health department Wednesday, Dec. 2, 2015. (FBI, left, and California Department of Motor Vehicles via AP)
This undated combination of photos provided by the FBI, left, and the California Department of Motor Vehicles shows Tashfeen Malik, left, and Syed Farook. The husband and wife died in a fierce gunbattle with authorities several hours after their commando-style assault on a gathering of Farook's colleagues from San Bernardino, Calif., County's health department Wednesday, Dec. 2, 2015. (FBI, left, and California Department of Motor Vehicles via AP)
President Barack Obama sits with FBI director James Comey in the Oval Office of the White House in Washington, Thursday, Dec. 3, 2015 before making a statement on Wednesday's mass shooting in San Bernardino, Calif. (AP Photo/Evan Vucci)
Officials told The Washington Times that American investigators led by the FBI were scrambling to piece together what contacts Mohammad Youssef Abdulazeez — a 24-year-old Kuwait-born American citizen who was killed in a shootout with police — may have made during various visits to the Middle East in recent years. (Associated Press)
An FBI investigator investigates the scene of a shooting outside a military recruiting center in Chattanooga, Tennessee, on July 17, 2015. (Associated Press) **FILE**
An FBI investigator investigates the scene of a shooting outside a military recruiting center on Friday, July 17, 2015, in Chattanooga, Tenn. Muhammad Youssef Abdulazeez of Hixson, Tenn., attacked two military facilities on Thursday, in a shooting rampage that killed four Marines. (AP Photo/John Bazemore) ** FILE **
Police tape surrounds the parking lot behind the AME Emanuel Church on June 19 as FBI forensic experts work the crime scene where nine people where shot by Dylann Storm Roof, 21, in Charleston, S.C. (Associated Press)
Subway restaurant spokesman Jared Fogle walks to a waiting car as he leaves his home, Tuesday, July 7, 2015, in Zionsville, Ind. FBI agents and Indiana State Police have removed electronics from the property. FBI Special agent Wendy Osborne said that the FBI was conducting an investigation in the Zionsville area but wouldn't confirm it involved Fogle. (AP Photo/Michael Conroy)
FILE - In this May 4, 2015 file photo, Jennifer Lawrence arrives at The Metropolitan Museum of Art's Costume Institute benefit gala celebrating "China: Through the Looking Glass" in New York. The trail of a celebrity photo-hacking scandal led the FBI to an unassuming brick home in Chicago, according to recently unsealed court documents, which reveal agents zeroing in on a computer they linked to nearly 600 hacked personal data-storage accounts, some belonging to female stars whose nude photos were leaked online. The raid is part of an ongoing investigation into how nude and sexually explicit photos of celebrities, such as Lawrence, were stolen and posted without permission. FBI spokeswoman Laura Eimiller in Los Angeles said no charges have been filed. (Photo by Charles Sykes/Invision/AP, File)
Former House Speaker Dennis Hastert arrives at the federal courthouse, Tuesday, June 9, 2015, in Chicago for his arraignment on federal charges that he broke federal banking laws and lied about the money when questioned by the FBI. (AP Photo/Paul Beaty)
John P. Elwood, attorney for Anthony D. Elonis, who claimed he was just kidding when he posted a series of graphically violent rap lyrics on Facebook about killing his estranged wife, shooting up a kindergarten class and attacking an FBI agent, speaks to reporters outside the Supreme Court in Washington in this Dec. 1, 2014, file photo. (AP Photo/Susan Walsh)
National Edition News cover for May 22, 2015 - FBI admits no cases cracked with Patriot Act powers: FBI Director James Comey testifies on Capitol Hill in Washington, Wednesday, March 25, 2015, before a House Appropriations subcommittee on Commerce, Justice, Science, and Related Agencies Budget hearing on the FBI budget. (AP Photo/Andrew Harnik)
FBI Director James B. Comey asked Congress this week to make sure Section 215 and two other parts of the Patriot Act, also slated to expire at the end of the month, are preserved. Those other powers include the ability to target lone wolf actors and to switch wiretaps if suspects switch their phones. (Associated Press)
Attorney General Loretta Lynch (center), flanked by Assistant Attorney General Leslie Caldwell, Criminal Division (left) and FBI Assistant Director Andrew McCabe, announces guilty pleas from four large banks for their manipulation of global currency markets. (Associated Press)
FBI special agent David Gomez (left), Snohomish County District 7 Fire Chief Rick Eastman (center) and ATF special agent Kelvin Crenshaw address media members on March 4, 2008, near the scene of where three multimillion dollar homes burned a day earlier in Woodinville, Wash. (Associated Press) **FILE**