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LUMBERTON (AP) — Twenty-four people — 23 of them fourth-graders — were sent to Southeast Texas hospitals after an accident involving their school bus, a pickup truck and an 18-wheeler.

The crash happened Wednesday on U.S. 69 in Lumberton as the Beaumont Independent School District bus was taking 44 Charlton-Pollard Elementary School students and four adults back to school from a Big Thicket field trip.

Beaumont school district spokeswoman Nakisha Burns says one student was airlifted to a trauma hospital in Houston. A hospital spokeswoman says most of the others went to Christus St. Elizabeth Hospital for examination. A nursing supervisor said none were admitted.

Police haven’t explained what caused the crash.

Lumberton is about 15 miles north of Beaumont.

(© Copyright 2017 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)

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