HARRIS COUNTY, Texas - A wrong-way driver caused a fatal crash that killed three people on the Hardy Toll Road in north Harris County Sunday morning. 

According to the Montgomery County Sheriff's Office, they received reports around 3:45 a.m. about a wrong-way driver in the southbound lanes on the Hardy Toll Road at I-45 North. 

Deputies said a driver in a Dodge Charger was traveling at more than 100 mph when it slammed into a Mercedes Benz with two people inside. 

When it made impact, the Charger burst into flames and the Mercedes flew into a cement barrier.

Deputies said the driver that caused the accident and the two people in the Mercedes all died at the scene.

It is unclear why the driver in the Charger was driving in the wrong direction.

The couple in the Mercedes Bens was reportedly heading home from a birthday party at the time.

Minutes before the crash, another driver, Mitch Duffy, was traveling on the empty road when he saw the driver of the Charger coming right at him. 

He was on his way to the airport to catch an early morning flight and didn't realize the driver was on the southbound side of the road until the driver almost hit him.

"So I began to move over to the right lane, and he just missed me by a few feet and then to learn later that two people were killed by this guy...it really just shook me up. I just thought 'Oh my God, that could've been me.'" said Duffy.

It is unclear if alcohol was a factor in the crash.

State Troopers have not yet identified the three people who were killed.