Omar Siddiqui Mateen
'It Affects Us All': Vigils Held Around the World for Victims of Orlando Nightclub Massacre
The Orlando attack has served as a stark reminder of the ongoing discrimination and violence faced by LGBT people in the US and abroad.
Massacre in Orlando: What Happened During the Worst Mass Shooting in US History
The FBI says the gunman had been questioned three times in the past five years, but was not under investigation at the time of the attack.
What We Know So Far About Omar Siddiqui Mateen, the Orlando Nightclub Gunman
The 29-year-old US citizen had been questioned three times by the FBI before he killed 50 people at a crowded gay dance club in Florida on Sunday.