The Latest on the fatal school bus crash in Chattanooga (all times local):

12:45 a.m.

Police say the driver of a school bus that crashed in Chattanooga, Tennessee, killing six people, has been arrested.

Chattanooga Police Chief Fred Fletcher says 24-year-old Johnthony Walker has been charged with five counts of vehicular homicide, reckless endangerment and reckless driving.

Fletcher says additional charges may be added as the case proceeds to a grand jury.

The school bus was mangled around a tree at the scene. Police say the students on the bus ranged from kindergarten through fifth grade.

The bus was carrying students from Woodmore Elementary.

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6:50 p.m.

The district attorney says six people are dead in an elementary school bus crash in Chattanooga.

Hamilton County District Attorney Neal Pinkston told media outlets that five people died at the scene and one died at the hospital. Melydia Clewell, spokeswoman for the district attorney, confirmed the number.

The school bus was mangled around a tree at the scene. Police say the ages of the students ranged from kindergarten through fifth grade.

The bus was carrying students from Woodmore Elementary.

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6:10 p.m.

Chattanooga police are reporting multiple deaths in an elementary school bus crash.

In a news conference Monday, Assistant Chief Tracy Arnold said there were multiple fatalities but did not confirm the exact number. Police have said the bus crash sent 23 people to area hospitals and 35 schoolchildren were on the bus Monday afternoon.

The school bus was mangled around a tree at the scene. Arnold said the ages of the students ranged from kindergarten through fifth grade.

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5:50 p.m.

Chattanooga police say an elementary school bus crash has sent 23 people to area hospitals.

Police Chief Fred Fletcher said 35 schoolchildren were on the bus Monday afternoon. He did not have information about the extent of injuries and said rescue efforts were continuing.

Fletcher said at a news conference that the bus was the only vehicle involved in the crash. The students on board ranged from kindergarten through fifth grade.

At the state Capitol in Nashville, Gov. Bill Haslam called the crash "a tragic event" and offered assistance.

Fletcher said police were interviewing the bus driver to determine what happened.

The bus was carrying students from Woodmore Elementary.