A lawsuit's been filed by families of victims of the Pulse Nightclub terrorist attack in Orlando against three giant internet companies, accusing them of allowing Jihadist recruitment on their sites.

FOX's Eben Brown reports from Miami:

Three families of people killed when a Jihadist gunman stormed Pulse Nightclub in Orlando over the summer are suing Google, Facebook and Twitter.

They claim those three internet companies knowingly permitted ISIS to recruit, to propagandize and to fundraise on their networks, and that lead to the radicalization of the now-dead gunman Omar Mateen.

49 victims were killed inside the nightclub. Mateen pledged support for ISIS before being shot dead by police.

In Miami, Eben Brown, FOX News.

Follow Eben Brown on Twitter: @FOXEbenBrown