Authorities say a Texas school bus carrying more than 40 students rolled over after veering off a rural road on the first day of class, injuring multiple students.

After the first day of the academic year, the Leander Independent School District bus veered off a curve for unknown reasons.

Sgt. Billy Ray, the public information officer for Texas DPS, noted the preliminary crash investigation indicates the school bus was traveling south on Nameless Road, which includes a slight curve. For an unknown reason as of this report, the school bus left the right side of the roadway and rolled over.