ICE spokeswoman Tanya Roman confirmed the incident and said no ICE employees were involved in the shooting.
Police officials said the four officers were placed on administrative leave per department policy while an investigation into the incident is conducted.
The armed man’s name was not released by authorities. Cool said it was not clear whether he had been identified yet by investigators.
The incident came one day before a planned national raid by ICE, targeting hundreds of immigrants across the country who have received deportation orders.
A planned protest at the Northwest Detention Center by activist group La Resistencia, also known as NWDC Resistance, had been planned for Saturday afternoon, but was postponed due to road closures and a 24-hour lockdown imposed at the facility.