An Ohio city inundated with threats last year related to an influx of Haitian immigrants has sued a neo-Nazi group that it says was at the heart of the onslaught.

City leaders in Springfield, Ohio, accused the Blood Tribe neo-Nazi group of making bomb threats, sending threatening emails and other acts.

The City of Springfield and its leaders are suing the neo-Nazi group Blood Tribe in federal court, accusing it of orchestrating a “campaign of harassment and intimidation fueled by ethnic and racial hatred” against supporters of the city’s Haitian community.