Illinois State Police release video of deadly officer-involved shooting near Mt. Vernon.

Illinois State Police have released a graphic video of a deadly officer-involved shooting near Mount Vernon on May 9. The video shows that 23-year-old Brandon L. Griffin of Albuquerque, New Mexico, pulled out a gun during an altercation with a trooper who was assisting a motorist on Interstate 64. Griffin and the officer exchanged gunfire, and Griffin was fatally shot. An ISP officer was also shot but has since been released and is recovering at home. The investigation is ongoing.