SPARTANBURG COUNTY, S.C. (WSPA) – A grandfather and a grandson were killed during a single-vehicle crash along Interstate 85 in Spartanburg County.

The crash happened in the northbound lanes of I-85 at mile marker 72 around 7:30 p.m.

The Spartanburg County Coroner’s Office said one person died at the scene. They were identified as Kenneth Lee Henderson, 60, of Spartanburg.

The second person was taken to the hospital where they later died. The coroner’s office identified the victim as Brently Dale Treadwell, 9, of Inman.

Spartanburg County School District 2 said Treadwell was a fourth grader at Sugar Ridge Elementary School.

Extra counselors will be at the school Wednesday.

“Brently Treadwell was an important member of our Sugar Ridge Family. He was a sweet student and a one-of-a-kind friend to everyone,” shared Mandy Ehlich, Principal at Sugar Ridge Elementary School. “He had a bright smile that would light up any room and would sometimes sing a tune at lunch. He always made sure to include all of his classmates. He wanted everyone he came in contact with to feel loved and included. He will be truly missed.”

Treadwell was the grandson of Henderson, the coroner’s office said.

The crash is being investigated by the South Carolina Highway Patrol.