After an attack in Amman, Jordan killed her husband, Tamara Fields decided to take action. Fields is suing Twitter for allegedly allowing ISIS to spread its propaganda across the globe, according to ABC News.

ISIS claimed responsibility for the Nov. 9 incident that left her husband, Lloyd, dead. Fields alleges that Twitter knowingly lets the Islamic terrorist group use its site to vocalize its message, lure in recruits and raise money, The Guardian reported.

"Without Twitter, the explosive growth of ISIS over the last few years into the most-feared terrorist group in the world would not have been possible," the complaint reads.

The lawsuit comes after many figures and organizations have called for social media companies to disallow terrorist to use their services, according to Business Insider.

President Barack Obama vowed Friday to take more seriously the use of the Internet by terrorist groups, setting up a task force to stop it from occurring.

"While we believe the lawsuit is without merit, we are deeply saddened to hear of this family's terrible loss. Violent threats and the promotion of terrorism deserve no place on Twitter and, like other social networks, our rules make that clear," Twitter said in a statement.