Police have identified the driver involved in a fatal wreck on U.S. 90 early Wednesday morning.

Gil Armando Santiago-Diaz, 29, died after crashing a black Chevy Tahoe into a drainage culvert at 1:51 a.m. Wednesday between U.S. 90 and an access road. Investigators believe Santiago-Diaz had been drinking, according to a police report.

While police aren’t sure what caused the crash, they do know that the Tahoe drifted off the road, struck a reflective marker and fell 10 feet into the culvert. The vehicle rolled over, ejecting Santiago-Diaz, who ended up pinned under the driver side of the vehicle.

A passenger in Santiago-Diaz’s car, who claimed to be asleep the whole time, emerged from the wreck without serious injury.