CHICAGO (CBS) – In LaSalle County, a couple was shot and killed inside their home, and their daughter’s ex-husband is now under arrest.

It was just before 10:00 Tuesday night, when a woman called police saying her ex-husband was outside her home, trying to get inside.

READ MORE: Who Is Suspected FedEx Mass Shooter Brandon Scott Hole?

When officers arrived, he was gone. A short time later, a neighbor found the bodies of the woman’s parents.

READ MORE: Aurora Pop-Up Pantry Opens On Monday

Police later discovered the ex-husband, walking in a nearby field.

MORE NEWS: Brandon Scott Hole Identified As Gunman Who Shot And Killed 8 People, Wounded 5 Others In Shooting At FedEx Facility In Indianapolis