Emergency vehicle collision leaves EMT in critical condition in downtown Louisville.

A paramedic is in critical condition after an ambulance transporting a teen involved in a fiery crash was hit by a semi-truck on the Brook Street exit off Interstate 65 North in downtown Louisville. The ambulance had its lights and sirens on when it went through a red light and was hit by the semi-truck. The 60-year-old paramedic in the back of the ambulance with the patient was ejected from the back and has life-threatening injuries. The LMPD Traffic Unit is investigating.