The FBI said the suspects robbed First Midwest Bank at 1975 Ridge Road around 1:17 p.m. and fled the scene after fatally shooting the security guard.
Investigators said they believe the security guard was approached outside the bank and may have been ambushed.
The Lake County Sheriff’s Department said their investigation is ongoing.
This is a breaking news story. Check back for updates.
Copyright © 2021 WLS-TV. All Rights Reserved.