The families of three Pulse victims are suing Facebook, Twitter and Google, according to a report by the Orlando Sentinel. The lawsuit was filed Monday.
The lawsuit claims "the social media companies allowed the so-called Islamic State to post propaganda and push its agenda," according to the report.
The suit was filed by the families of 22-year-old Juan Guerrero, 25-year-old Tevin Crosby and 40-year-old Javier Jorge-Reyes.
The June 12 attack left 49 people dead and 53 wounded. Gunman Omar Mateen, who pledged allegiance to ISIS, was killed by SWAT team members.