HARRIS COUNTY, Texas (KTRK) -- An investigation is underway after officials said a driver was killed in a fiery crash on West Grand Parkway on Sunday morning.

According to the Harris County Sheriff's Office, deputies were dispatched to the 16800 block of West Grand Parkway at about 3:40 a.m. in reference to the crash.

Investigators said that the driver was in a 2017 white Buick Encore when they failed to stay in a single lane and exited the roadway into a grass median.