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FBI: Orlando gunman radicalized online
The FBI believe the Orlando shooter may have been radicalized online. CNN's Brian Todd reports.
04:18 - Source: CNN
Who is the Orlando gunman? 18 videos
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FBI: Orlando gunman radicalized online
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Orlando shooting bathroom video
Source: Orlando shooter texted wife during attack
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Inside Orlando shooter's mosque
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Files: Mateen disciplined 31 times in elementary school
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New video of Orlando shooter emerges
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Ex-wife of gunman details violent marriage
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Orlando nightclub shooter Omar Mir Seddique Mateen poses with his wife, Noor Salman, in a family photo posted online.
Did Orlando shooter's wife know about plot?
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Univision reporter Juan Carlos Aguiar goes inside the apartment of Omar Mateen, who killed 49 people at Pulse nightclub in Orlando.
Inside Omar Mateen's apartment
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Was the Orlando shooter gay?
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Residents of Orlando light candles during the first official vigil in the wake of the deadly attack at Pulse Orlando.
Orlando shooter cased Disney and nightclub
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'Pulse' performer says shooter frequented the club
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Police and investigators work near the area of the mass shooting at the Pulse nightclub on in Orlando, Florida on June 12, 2016. A somber President Barack Obama expressed grief and outrage at the "horrific massacre" of 50 late-night revelers at an Orlando gay club, branding it an act of terror and hate. / AFP / Mandel Ngan (Photo credit should read MANDEL NGAN/AFP/Getty Images)
Reports: Orlando gunman visited nightclub several times
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FBI: Shooter had been investigated
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Shooter's father: Islam had nothing to do with this
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Ex-wife of Orlando shooter speaks out
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An image taken from Omar Mateen's Myspace page. Law enforcement sources identified Mateen as the shooter in the Orlando terror attack.
Gunman called 911, claimed allegiance to ISIS
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The Orlando Police Department released this photo of Omar Mateen, the person identified as the shooter in the Orlando terror attack.
Officials: FBI had investigated Orlando gunman
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