She had told the FBI that he was unstable, and that she didn't believe he was part of a terrorist group - despite him pledging allegiance to ISIS before the attack and the fundamentalists later claiming responsibility for it.
Attacked: Mateen attacked gay club Pulse (pictured) on Sunday morning.
He had been a regular there for three years, witnesses later testified - and denied Mateen's father's claim that his son was homophobic Drunk: Mateen had sometimes just sat quietly in Pulse, one witness said, but at other times he became very drunk and belligerent.
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