CHICAGO (AP) -- Hundreds of looters descended on downtown Chicago after a police shooting on the city's South Side.
Police say the vandals smashed the windows of dozens of businesses early Monday and made off with merchandise, cash machines and anything else they could carry.
Police Superintendent David Brown says when police shot a man who opened fire on officers Sunday, the incident apparently prompted a social media post urging looters to converge on the business district.
"This was not an organized protest," Brown said. "Rather, this was an incident of pure criminality. This was an act of violence against our police officers and against our city"
Over several hours, police made more than 100 arrests, and 13 officers were injured, including one who was struck in the head with a bottle.
Chicago's police chief says there will now be a heavy police presence in the city, until further notice.
Chicago Mayor Lori Lightfoot says those responsible for the violence will be held accountable.
"These individuals engaged in what can only be described as a brazen and extensive criminal looting and destruction. And to be clear, this had nothing to do with legitimate protected First Amendment expression."
"And to those who engage in this criminal behavior, let's be clear, we are coming for you. We are already at work in finding you and we intend to hold you accountable for your actions. I don't care, I do not care whatever justification was given for this. There is no justification for criminal behavior ever."Mayor Lori Lightfoot