Speed and alcohol are believed to have been factors in a crash last week that killed a Rock Hill man, according to the S.C. Highway Patrol.
Nicholas Xavier Norton, 19, died Monday after crashing into a ditch and some trees early Friday, officials said.
Lance Cpl. Ron Johnson of the Highway Patrol said Norton was traveling around 80 mph in a 45 mph zone when the crash occurred.
"Speed is believed to be a factor in this collision, as well as alcohol," Johnson said.
A toxicology test was completed Tuesday, said York County interim Coroner Sabrina Gast. Results are expected within two weeks, she said.
Around 1:53 a.m. Friday, Norton traveled south in a 2007 Honda along Hollis Lakes Road in Rock Hill and ran off the road, Johnson said.
"He struck a ditch and several trees before overturning," he said.
Norton, who was not wearing a seat belt, was ejected from the car, Johnson said. He was transported to Carolinas Medical Center in Charlotte, where he died Monday, Johnson said.
Norton's family couldn't be reached Tuesday.
Johnson said Norton's death marks the seventh time this year that someone has died on York County roads. Of the seven fatalities, four have been teenagers, he said.
"A lot of them have been single-car collisions," Johnson said. "That's a concern. We're seeing noncompliance with seat belt laws. They're just not wearing their seat belts."
To date, 129 people have died on state roads -- seven fewer than at the same point last year, according to the state office of public highway safety.