The parents of Nohemi Gonzalez, the only American killed in the November 2015 terrorist assault on Paris, have filed a lawsuit against Twitter, Facebook and Google, which operates YouTube. The federal lawsuit filed on Tuesday at a district court in northern California said the social networks provided "material support" to ISIS that took responsibility for the attack in which 130 people lost their lives. The parents of the late 23-year-old California student also said in the lawsuit that "Without defendants Twitter, Facebook and Google (YouTube), the explosive growth of ISIS over the last few years into the most-feared terrorist group in the world would not have been possible." It is still not clear whether the service providers are liable under American law. In response, Twitter and Facebook claimed that the lawsuit is without merit while Google said that it does not comment publicly on pending litigation. The lawsuit is scheduled to be heard in court in September.