Benjamin Schildknecht, 40, was driving a stolen Toyota pickup truck when he ran a stop sign and crashed into an on-duty officer in an unmarked Chevy Malibu.
LMPD said it is conducting a death investigation.
Police said at least one vehicle was traveling at 119 mph when it hit the victims' vehicle.
A pickup truck was traveling on Southern Parkway when they lost control, collided with a tree head-on, and caught fire.
McConnell was at dinner on March 8 after a hotel reception for a campaign committee aligned with him when he tripped and fell.
Georgia offensive lineman Devin Willock and a recruiting staff member were killed early Sunday in a car wreck, the school said, just hours after the Bulldogs celebrated their second straight national championship with a parade and ceremony.
Robert L. Stidham, 62, had to be freed from his truck by emergency responders and was flown to a Louisville hospital, Indiana State Police said.