Ghost posted tweets from their account such as 'I'm gay and I'm proud', 'To The Families & Victims of #Orlando We Will Not Forget' and links to gay porn sites.
The group's official news agency then claimed responsibility for the attack and jihadists praised the attacker on Twitter, changing their profile pictures to a photo of Mateen.
The gunman, Omar Mateen, reportedly pledged allegiance to the Islamic State before the shooting. The hacker who's been active for several months in defacing and deleting pro-ISIS accounts, launched his new operation following the mass shooting in an Orlando nightclub that left 49 people dead.
Orlando attack is a 'wake-up call' to stop dehumanizing LGBT people, advocates say
