A 13-year-old girl has died of injuries suffered when she jumped from a moving Texas school bus after an argument with another student.

Galveston County Sheriff Henry Trochesset says investigators believe the girl intentionally opened the rear emergency door and jumped.

The bus was going about 55 mph Monday on Interstate 45 near Bayou Vista when the girl jumped and suffered a head injury. A coroner said she died Wednesday afternoon.

Trochesset says the Galveston Independent School District bus was transporting students from an alternative school at a juvenile justice center when two girls argued.

The sheriff says the driver stopped, separated the girls and placed the 13-year-old in the rear area. The route resumed when the teen opened the emergency door and jumped.

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