Omar Mateen's Troubled Past

Omar Mateen call with Orlando police

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Records: Mateen disciplined 31 times in elementary school

Stop the Hate: 49 Celebrities Honor 49 Victims of Pulse Tragedy in Ryan Murphy-Produced Tribute

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50 dead in Orlando gay club shooting suspect is Omar Mateen - BBC News

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Orlando attack survivor remembers the friends he lost

New body camera footage shows chaos, carnage inside Pulse nightclub: Part 1

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Videos show Pulse nightclub gunman prepping for attack

Orlando killer left message on Facebook before attack

Orlando Gunman Omar Mateen Was Caught On Hidden Camera In 2012 Documentary

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CNN's emotional tribute to Orlando shooting victims

Childhood friend of suspected Orlando nightclub shooter Omar Mateen speaks

Looking Omar Mateen In The Eyes | Orlando Nightclub Shooting | The New York Times