Cameron Bean, 28, has reportedly died after being struck by a car on Saturday, according to friends.
The driver told police that the sun got in her eyes, causing her to veer off the road where she hit Bean. Bean was wearing reflective running shoes and clothing and was running against traffic, according to a police report.
He was listed in critical condition following the accident, but reportedly passed away today, according to several friends.
Investigators will conduct a follow-up interview with the driver and are recreating and reconstructing the crash to verify exact driving conditions and the cause of the accident.
Investigators are also downloading and collecting electronic data.
Kyle Miller, spokesman for the Chattanooga Police Department, said the case will require extensive follow-up by investigators, and said police will not release any additional information "that is not verified through thorough review."