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Orlando shooter able to buy guns despite being on FBI radar

A picture is emerging of the Orlando gunman, 29-year-old Omar Mateen, who was born in New York to Afghan parents. He had no apparent criminal record and was working as a security guard before the attack. Mateen was married for a second time and had a 3-year-old son. Jeff Pegues takes a closer look at his background, including some possible warning signs.
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