(CNN) A Twitter account that tweeted a call to violence and claimed to be representing the position of "Antifa" was in fact created by a known white supremacist group, Twitter said Monday. "This account violated our platform manipulation and spam policy, specifically the creation of fake accounts," a Twitter spokesperson said in a statement. Although the account only had a few hundred followers, it is an example of white supremacists seeking to inflame tensions in the United States by posing as left-wing activists online. The phenomenon of people on the right creating fake Antifa accounts predates the current wave of protests. The takedown Monday is not the first time a fake Antifa account linked to white supremacists has been suspended by Twitter, the spokesperson confirmed.