A mother has been charged with felony DUI after a fatal crash led to the deaths of her 6-year-old twin boys.

WHNS reported that the South Carolina Highway Patrol charged the mother in the accident, which happened after 10 p.m. Sunday. Lance Cpl. David Jones confirmed the time the crash occurred in Pickens, South Carolina, according to WSPA.

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The Associated Press reported troopers said the woman, Jennifer Knox, was driving her 2005 BMW and struck a 2014 Kia while trying to pass another vehicle. The crash was head-on, and the area of the highway in which the BMW passed was a no-passing zone, according to WSPA.

South Carolina Highway Patrol charged mother Jennifer Knox with two counts of felony DUI resulting in death, child endangerment and other charges after her 6-year-old twin boys died in a crash, according to the AP.

Credit: South Carolina Department of Public Safety

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Credit: South Carolina Department of Public Safety

Troopers said the BMW overturned and slid down the highway, WHNS reported. The children, later identified as Dylan Clark and Camryn Clark, and Knox were not wearing seat belts.

WSPA reported that the boys were taken to area hospitals, where they later died.

Knox was airlifted to a hospital, troopers said, according to the APWSPA reported she faces two counts of felony DUI resulting in death, and child endangerment, two counts of child restraint violation and seat belt violation.