On Sunday, Wisconsin Governor Scott Walker declared a state of emergency in Milwaukee County and activated the state’s National Guard in response to violent unrest that broke out in Milwaukee Saturday night following the fatal shooting of a black man by police, The Wall Street Journal reports.

News outlets in Milwaukee are reporting fires and other violence in the city tonight after a police officer fatally shot a 23-year-old man fleeing a traffic stop Saturday afternoon. According to the Milwaukee Journal Sentinel, police say that the dead man was carrying a stolen handgun.