It happened just west of the State Capitol building around 3:45 a.m.
The trooper was patrolling the area of Colorado Street and was making a turn onto West 13th Street when they ran over the person who was lying in the street, according to DPS officials.
The victim, a 50-year-old man, died at the scene, according to Austin Travis County EMS.
The Texas DPS Capitol Region was investigating, KXAN reported.
#ATXTrafficFatality: Auto v Pedestrian incident at W 13th St/Colorado St; #ATCEMSMedics have obtained a Deceased On Scene pronouncement of 1 adult. Expect prolonged road closures & remain alert for investigators working in the area. No other information available.— ATCEMS (@ATCEMS) April 15, 2021