CONROE, Texas — Crash investigators are working to figure out what caused a major wreck during the afternoon rush hour Thursday.

The deadly crash shut down all northbound traffic on I-45 near SH-105 in Conroe.

Drivers are being moved to the northbound feeder road, near the crash scene, which is causing major traffic delays.

According to the Texas Department of Public Safety, at least one person died in the crash. It's unclear if others were hurt. Conroe Police are at the scene investigating. We are working to get more information from the department.