By Jennifer Keiper, WLS-AM 890 News

​(CHICAGO) The UIC Pavilion, in Chicago, can hold some 10,000 people and several thousand were inside when an announcement came Friday evening that the event was being postponed.  That is when arguments started breaking out and some of the fights turned physical.

Police and other security moved in and started removing some attendees from the building.  One man was hauled off when he jumped onto the stage and started ripping up paper.

For more continuing coverageand analysis of the event, click here.

The Trump campaign issued a statement saying that shortly after the candidate arrived in town, he met with law enforcement and decided that for the safety of everyone – the event should be postponed.  The campaign went on to thank supporters for their attendance and urged them to please go in peace.

Chicago Police Department Spokesman Anthony Guglielmi said the Trump campaign did not consult the police department before canceling Friday’s rally.

The building was emptied approximately 45 minutes after the planned 6pm start time and those inside spilled onto the surrounding streets where large numbers of police were posted and protesters were kept corralled by fences.

Some protesters attempted to disrupt traffic on the nearby Eisenhower Expressway, prompting police to temporarily close some ramps.

@ WLS-AM NEWS 2016