San Francisco, London- Twitter now is being sued by the widow of an American killed in Jordan who accuses the social media company of giving a voice to terrorists.

Tamara Fields, a Florida woman whose husband Lloyd died in a November 9 attack on the police training center in Amman, said Twitter knowingly let the militant group use its network to spread propaganda, raise money and attract recruits.

In her complaint filed on Dec. 13, Fields said San Francisco-based Twitter had until recently given ISIS, an “unfettered” ability to maintain official Twitter accounts.

“Without Twitter, the explosive growth of ISIS over the last few years into the most-feared terrorist group in the world would have not been possible,” according to the complaint, which was filed in the federal court in Oakland, California.

On the other hand, Twitter made a statement about the civil lawsuit that stated the following: “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”, the statement added.

Twitter has positioned itself as a defender of free speech, and been reluctant to censor.

However, Twitter said it had carried out 42 percent of the 1,003 removal requests from governments, law enforcement and courts worldwide during that period, and withheld 158 accounts and 2,354 tweets.

In December 2015, Twitter had updated its policies for policing content to explicitly prohibit “hateful conduct.”

In view of social media battles on terrorism and propaganda, Frankfurt-based Facebook has hired a Bertelsmann business services unit to monitor and delete racist posts in Germany, following the widespread public criticism of the company failing to do enough to halt hate speech.

“Through this investment, Facebook wants to make sure that reports about content that may violate our community standards can be dealt with even more effectively,” a Facebook spokeswoman said.

Facebook ground rules restrict bullying, harassment and threatening language but critics say the company does not do enough to enforce its stated procedures.