UPDATE: The Hamilton County Sheriff's Office says the school bus crash in Harrison last week was not the bus driver's fault.

The sheriff's office says the person at fault for the crash is a juvenile who was driving a Jeep Liberty.

The crash sent more than a dozen students to a hospital and also the driver the of the Jeep.

All of them had minor injuries.

The sheriff's office has not said if any charges will be filed.

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PREVIOUS UPDATE: Hamilton County Schools spokesperson Tim Hensley says the 13 students were injured in a bus crash on Friday. They were treated and released from the hospital on Friday. 

However, it's still not clear what caused the crash. 

The Hamilton County Sheriff's Office is investigating and did not release any details on the cause or who is at fault when asked on Monday. 

The Tennessee Highway Patrol had a similar response. 

"Every school bus crash [or] incident, the school system is required to notify THP. THP will inspect the bus prior to the bus being put back in service," Lt. John Harmon said via email. 

District 9 school board member, Dr. Steve Highlander, says he was proud of the quick response at the scene. 

"They took care of the situation. Parents came. The children that needed to go to the hospital were immediately transported to the hospital, which I was very thankful." he said. "Our transportation staff and drivers did a great job." 

According to our archives, this is the third time a Hamilton County bus has been involved in a crash within a week. On August 16, a bus was involved in a minor crash on E. Brow Road on Signal Mountain.

Three days later, a bus was rear-ended while taking Calvin Donaldson Elementary students to school.

"Like any other vehicle sometimes they're totally unavoidable. I'm just thankful they have all been minor, very minor," Dr. Highlander said. 

All three buses were a part of First Student's fleet. Channel 3 reached out for a comment, but did not hear back from the company on Monday. 

"They're working closely with us so I'm hoping for the best ," Dr. Highlander said.

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PREVIOUS STORY: A crash involving a Hamilton County school bus and an SUV in Harrison sent several people to a hospital on Friday.

It happened shortly after 2:30 p.m. in the 9100 Village Wood Drive.

Hamilton County Schools spokesperson Tim Hensley says the bus was carrying about 50 students from Brown Middle and Central High schools.

Lt. Nick Wilson with Hamilton County EMA says the crash involved school bus 331 and a Jeep Liberty that hit head-on in a curve.

Hensley says a total of 13 students received medical attention.

Lt. Wilson says four of the students had minor injuries and were taken to a hospital by ambulance. 

Hensley says the other injured students were taken by a parent to a hospital.

The driver of the Jeep Liberty was also taken to a hospital by EMS for minor injuries.

Hensley says 12 of the 13 students have been released from the hospital. He says all of their injuries are minor and they're being discharged as they are treated.

Details of how the crash happened are under investigation by the Hamilton County Sheriff's Office and the Tennessee Highway Patrol.

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