'He got angry when he saw two men kissing': Father of New York-born shooter Omar Mateen, 29, says son responsible for worst mass shooting in US history was homophobic 

  • WARNING: GRAPHIC CONTENT 
  • Suspected Islamic extremist opened fire inside Pulse gay club in Orlando in the early hours of this morning 
  • Law enforcement sources have identified the shooter as US citizen Omar Mateen, from Port St. Lucie in Florida
  • He killed at least 50 people and injured 53 and took party-goers hostage before being killed by police
  • Shooter, 29, was carrying a suspicious device, possibly a suicide vest, when he began shooting in the nightclub
  • Police used an explosive device to distract the gunman and rescue around 30 people who had been taken hostage
  • Police engaged in gunfire with the man and an officer was shot in the head, but he was saved by his helmet
  • FBI says gunman may have 'leanings to radical Islamic terrorism' and it is being investigated as 'an act of terrorism'
  • Took place four miles from where The Voice singer Christina Grimmie, 22, was shot dead at The Plaza Live on Friday