Videos posted to social media showed large crowds breaking windows and entering stores along the Magnificent Mile.

The looting continued into early Monday morning and police could not provide details about specific incidents or numbers of arrests.

Witnesses said the looting appeared to be a coordinated effort with multiple cars dropping groups of people off, who then smash-and-grab merchandise in the store, and take off running in opposite directions before police can respond to each incident.

Gun shots were heard by ABC7’s team of journalists near State and Lake early Monday Morning as police responded to widespread looting and property damage.