A man arrested for impersonating a police officer during an anti-ICE protest in Chicago had a loaded semi-automatic weapon, badges and fake documents, police sources said.

Officers spotted the man with "police identifiers" leaving a parking garage around 5 p.m. in the 200 block of South Michigan Avenue, Chicago police said.

A man is in custody after Chicago police said he impersonated an officer during the ICE protests in the Loop Thursday afternoon.

The "No Kings" Chicago protest Saturday in Daley Plaza is one of the anchor events for a national anti-Trump movement. It is one of more than 1,800 protests being held nationwide in response to the Trump military parade.

The Chicago No Kings rally comes as protests have ramped up against ICE and the Trump administration this week locally and in Los Angeles, where the National Guard and Marines have been deployed against the wishes of local leaders.

Thousands of protesters marched in Chicago against Immigration and Customs Enforcement raids in their city and President Trump’s deployment of troops in Los Angeles.