Two people are reportedly in serious condition after a crash on the northbound I-35 Service Road near Teri Road.
Police are still investigating the cause of the crash which happened at around 5:30 a.m.
Officials say that the driver of one of the cars fled the scene but police found the driver who was taken to a hospital.
The investigation is expected to continue for a few hours and drivers are asked to avoid the area.
This is a developing story and will be updated as more information becomes available.