Chicago Public Schools CEO Pedro Martinez said it was all a "misunderstanding" after U.S. Secret Service agents showed up at Hamline Elementary School and were mistaken as Immigration and Customs Enforcement (ICE) officers.

Despite earlier reports that ICE agents tried to enter a Chicago elementary school Friday, the agency says it wasn't them. So what exactly happened?

The Secret Service is continuing to release information after Chicago school officials responded to what they thought was an ICE action Friday.

The operation began at a home and later extended to the school grounds.The agency stressed that it only investigates threats, does not enforce immigration laws.

CPS officials initially said agents who identified themselves as ICE arrived at Hamline Elementary in Back of the Yards Friday, but it was actually Secret Service agents looking for an 11-year-old who posted an anti-Trump video,

The agents turned out to be unrelated to immigration, officials said hours later. They were from the Secret Service, investigating a threat.

Chicago Public Schools officials incorrectly said U.S. Immigration and Customs Enforcement Agents attempted to enter a South Side elementary school.

CHICAGO -- The U.S. Secret Service said its agents visited a Chicago elementary school Friday while investigating a threat, hours after school officials mistakenly claimed that U.S. Immigration and Customs Enforcement agents had come to the building.

Officials with Chicago Public Schools claimed U.S. Immigration and Customs Enforcement agents were seen at Hamline Elementary School. The Secret Service said special agents were investigating a threat.

At least eight large public school districts across the United States have vowed in recent days to try to protect undocumented immigrant students and their families from President Donald Trump's mass deportation push.

Chicago Public Schools officials reportedly mistook Secret Service agents for ICE officers during a chaotic morning incident amid migrant crackdowns.

The first official elected Chicago school board meeting focused on protecting Chicago Public School students from ICE, and a plea from the CPS CEO to undocumented parents.