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A handout photograph made available by the Orlando Police showing a general view of the scene following a shooting at Pulse Nightclub in Orlando, Florida, June 12.
A handout photograph made available by the Orlando Police showing a general view of the scene following a shooting at Pulse Nightclub in Orlando, Florida, June 12.

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    Killer's violent past: Missed warning signs?

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Killer's violent past: Missed warning signs?

CNN is learning that the terrorist responsible for the attack on an Orlando nightclub has shown violent tendencies dating back years. CNN's Brian Todd reports.

Killer's violent past: Missed warning signs?

CNN is learning that the terrorist responsible for the attack on an Orlando nightclub has shown violent tendencies dating back years. CNN's Brian Todd reports.