Two twin boys were killed in a South Carolina collision on Sunday night and their mother, who was driving the boys when the incident occurred, is at fault, according to police.

FOX Carolina reports that 38-year-old Jennifer Lyn Knox was driving a BMW northbound along Walhalla Highway in Seneca at around 10 p.m. Sunday night, when she tried to pass another vehicle. In the process, she slammed head on into a 2014 KIA traveling southbound in the opposite lane. The woman and her 6-year-old twin sons were not wearing seatbelts. All three were ejected from the car when it flipped.

First responders rushed Knox to Greenville Memorial Hospital. Her sons, identified as Dylan and Camryn Clark, were taken to a different hospital where they both were pronounced dead. Knox is still in the hospital, but so far expected to survive.

The driver of the KIA was wearing a seatbelt at the time of the crash and wasn’t injured.

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According to authorities, Knox was under the influence of alcohol when the crash occurred. Joe Hovis, with the South Carolina Highway Patrol, said that upon Knox’s release from the hospital, she’ll be detained and taken to Pickens County Detention Center.

Knox is facing numerous criminal charges, including DUI resulting in death, child endangerment, a seatbelt violation, and child restraint violations.

Meanwhile, family members set a GoFundMe fundraiser to help raise funds for the boys’ funeral. The boys have been described as “loveable” children with “big hearts.”

The story is developing. Check back with CrimeOnline as additional details become available.

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[Feature Photo: Dylan and Camryn Clark/GoFundMe]