Police in the Chicago suburb of Zion fatally shot a man authorities say was wearing a tactical-style vest, carrying a BB gun and taking photographs of schools.

Lake County Sheriff's Detective Christopher Covelli said the 38-year-old man was killed Wednesday morning after he led officers on a foot chase and a struggle ensued.

Officers responded early Wednesday to a report that a suspicious person was taking photographs of two local schools. Investigators found the suspect, who appeared to be wearing body armor, and the pursuit and shooting followed.

Covelli said the body armor was found to be a homemade tactical-style vest with metal inserts.

The man's name hasn't been released. Zion police said they obtained a warrant to search his home.

At least seven schools were locked down during the incident.