The Ohio town at the center of a culture war over debunked claims about Haitian migrants was forced to close its City Hall on Thursday after receiving a bomb threat, the city announced on its website and social media channels.

The bomb threat "was issued to multiple facilities throughout Springfield,” the city said. “We ask the community to avoid the area surrounding City Hall vicinity while the investigation is ongoing and to report any suspicious activity to the Springfield Police Division.”

It wasn’t immediately clear who made the bomb threat or if it was credible. The mayor’s office did not answer a call Thursday and its voicemail box was full.

The city’s mayor, Rob Rue, indicated Thursday that the threat included complaints about Haitian migrants in the city, according to the Springfield News-Sun.