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CHICAGO (WLS) -- Downtown Chicago's streets were packed with traffic Thursday night into Friday morning, with people driving around to celebrate Mexican Independence Day.
Crowds on Michigan Avenue caused gridlock on some downtown streets overnight. Chicago police said there were no arrests and there will be extra patrols this weekend.
City officials are encouraging people celebrate the holiday peacefully, but said they're prepared to close streets if necessary.
Chicago's Office of Emergency Management and Communication sent an alert that said: "We ask that everyone be cognizant of your neighbors and respectful of others while celebrating and realizing there are critical functions that exist for the well-being of all."