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chattanooga shooting investigation update serfaty dnt lead_00000624.jpg
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Chattanooga shooter followed writings of al Qaeda cleric
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Hamilton County Sheriff
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Marines 'willingly ran back into the fight'
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Sources: Shooter searched 'martyrdom' online
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White House, U.S. Capitol flags lowered to half-staff
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WSAV
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Armed man stands guard at recruitment center
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Hamilton County Sheriff
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Family spokesman: Chattanooga shooter had depression
Mohammad Youssuf Abdulazeez is the suspected gunman in July 16, 2015 Chattanooga, Tennessee Naval Reserve shooting that left four Marines dead and the gunmen also killed.
From Facebook/Yearbook
Mohammad Youssuf Abdulazeez is the suspected gunman in July 16, 2015 Chattanooga, Tennessee Naval Reserve shooting that left four Marines dead and the gunmen also killed.
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What did the shooter's writings reveal?
A police car blocks the entrances to the Tennessee Naval Reserve Center on Thursday July 16 in Chattanooga, Tennessee. Authorities say Mohammod Youssuf Abdulazeez, 24, opened fire first on a military recruiting station at a strip mall and then moved to an operational support center operated by the U.S. Navy seven miles away, where he killed four U.S. Marines.   The gunman was also killed.
Jason Davis/Getty Images
A police car blocks the entrances to the Tennessee Naval Reserve Center on Thursday July 16 in Chattanooga, Tennessee. Authorities say Mohammod Youssuf Abdulazeez, 24, opened fire first on a military recruiting station at a strip mall and then moved to an operational support center operated by the U.S. Navy seven miles away, where he killed four U.S. Marines. The gunman was also killed.
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States increase security for military installations
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How the Chattanooga shooting unfolded
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Karen Hedrick
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Witness records gunfire during Chattanooga shooting
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Hamilton County Sheriff
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FBI begins 'terrorism investigation' in Chattanooga
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From Facebook
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Investigators look for clues about Chattanooga gunman
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Chief: Wounded cop dragged 'from under the gunfire'
Mohammod Youssuf Abdulazeez's mugshot from 4/20/2015
Hamilton County Sheriff
Mohammod Youssuf Abdulazeez's mugshot from 4/20/2015
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Chattanooga shooter's father was investigated by FBI
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CNN
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Mayor: We had no indication shooter was a threat
Joseph Sullivan/Facebook
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Marine killed in Chattanooga shooting identified
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FBI: We are checking every lead
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Muslim community condemns Chattanooga shooting
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Friend of shooter: 'It's a wave of disbelief and shock'
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MMA Coach: He was an All-American kid
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Chattanooga Mayor: Our hearts are breaking
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What do we know about Mohammad Youssuf Abdulazeez?
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YouTube/GFL GoFightLive
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Video: Chattanooga shooter participated in MMA fights
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Vehicle used in Chattanooga shooting a rental
From Facebook
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Coach: Chattanooga gunman was 'humble' and 'smart'
Devon Sayers/CNN
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4 Marines killed in Chattanooga shooting attack
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Obama: Chattanooga shooting a 'heartbreaking circumstance'
Gina Mule
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Witness: 'I was in shock at how many times he fired'