That woman, who lives in the home, was not being held against her will and was not injured, he said.

"She was with him voluntarily," he said.

The man subsequently called 911 and came out of the home about noon, police said.

The man is suspected of using a silver revolver in the shooting, Georgeff said. Police anticipated obtaining a warrant to search the house for the gun, he said.

Detectives were working with the Lake County prosecutor's office in seeking charges against the man, he said.

Georgeff said he didn't immediately have details on what may have led to the initial domestic disturbance, but the shooting happened about the time middle school students were headed to class.

The damaged vehicle had a blown tire, but it was unclear if that was caused by a gunshot or because the driver hit something, he said.

The shooting occurred about one block from Highland High School and Highland Middle School. The standoff occurred about three blocks from the school campus.

All six of Highland's public schools were placed on a "lockout" as a precaution, Superintendent Brian Smith said.