Police expect charges to be filed and are working to recover video from Wednesday's wreck involving a Beaumont school bus and two trucks in Lumberton.

Because the investigation is in its early stages police are unsure of exactly what the charges will be but believe the bus driver may be at fault Lumberton Police Chief Danny Sullins told 12News.

The hard drive from the bus' digital video system may have been damaged in the crash and police are currently unable to view video from the incident Sullins said.

They plan on contacting the video system's manufacturer for assistance in recovering the video he said.

The bus was equipped with seat belts according to Lumberton Police.

Two of the children on the bus told police that it appeared that the bus driver may have fallen asleep Sullins said.

The bus driver's blood was tested but Sullins does not expect the results to show intoxication.

The wreck happened just before 2 p.m. on southbound U.S. 69 at West Walton Road Wednesday as the Beaumont Independent School District bus was carrying 43 fourth grade students and five adults back to Charlton-Pollard Elementary school following a field trip the Big Thicket National Preserve according to a release from the Lumberton Police Department.

Police say that it appears that the southbound bus struck the rear of a truck tractor and then a Dodge pick up before crossing over through the northbound lanes and came to a stop in a ditch on the north bound side of the highway.

The truck-tractor and the pick up were also traveling south when the accident happened and were each occupied only by the driver police said.

Lumberton Police say that 25 patients were transported to Beaumont hospitals by Lumberton EMS, Acadian Ambulance and City of Beaumont EMS ambulances.

Sixteen were transported to Christus S. Elizabeth Hospital,  five to Baptist Hospital of Southeast Texas and four to Medical Center of Southeast Texas's Victory Campus according to Lumberton Police Chief Danny Sullins.

BISD tells 12News as of Thursday afternoon that one student remains in a Houston hospital and one teacher remains in a Beaumont hospital.

All three Beaumont hospitals tell 12News that all of their bus crash patients have been released as of late Thursday afternoon.

Christus S. Elizabeth Hospital spokesperson Karen Stubblefield told 12News that 11 children and one adult were transported to the hospital and that one was transferred by helicopter to a Houston hospital and the rest were treated and released.

Baptist Hospitals of Southeast Texas spokesperson Mary Poole told 12News that five children and two adults had been treated and released from Baptist Hospital.

Medical Center of Southeast Texas's Victory Campus spokesperson Becky Ames told 12News that four children and one adult had been treated and released at Victory.