A volunteer worker walks past a shattered display window early Sunday morning, May 31, 2020, at the downtown Macy’s store in Chicago, after a night of unrest and protests over the death of George Floyd, a black man who was in police custody in Minneapolis. Floyd died after being restrained by Minneapolis police officers on Memorial Day. (AP Photo/Charles Rex Arbogast)

CHICAGO (AP) — Chicago officials are taking extraordinary steps to control downtown access in the hopes of preventing further chaos after a night of tense protests over the death of George Floyd that included violent clashes, hundreds of arrests and smashed store windows.

Mayor Lori Lightfoot said Sunday that the Illinois National Guard will be activated, city trains and bus service into downtown will be suspended and a nightly 9 p.m. curfew remains in effect. The Chicago Transit Authority said all bus routes and rail lines would be suspended until Monday morning.

Six people were shot, one fatally, amid the protests that started peacefully Saturday but devolved into chaos. Police say 240 people were arrested and 20 police officers were injured.