Three people are in the hospital after a charter bus from Mexico crashed near Houston Wednesday morning.
Investigators aren’t sure what caused the bus to slam into a highway guard rail while most of the passengers were sleeping.
The front of the vehicle was damaged so badly, they had to exit from the back.
One of the people taken to the hospital is the driver.
None of the injuries are considered life-threatening.
Several other passengers suffered minor cuts and scrapes.
The bus was on its way from Matamoros, Mexico — which is on the U.S. border to Tennessee.
A second driver on board was sleeping when the crash happened.
No other vehicles were involved in the incident.