Police say a 20-year-old North Dakota woman was surfing Facebook on her phone when she crashed into an SUV at 85 mph, killing an 89-year-old great-grandmother.

Abby Sletten was charged with negligent homicide in the death of Phyllis Gordon, of Ada, Minnesota, reported the Star Tribune.

State police said Sletten crashed into the rear end of an SUV driven by Gordon’s granddaughter May 27 between Fargo and Grand Forks.

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Gordon’s granddaughter, 34-year-old Jennifer Myers, slowed down to make an illegal U-turn, according to witnesses, when Sletten slammed into the rear of their vehicle.

Witnesses said her brake lights never came on before the crash, suggesting she never saw the other vehicle or was distracted.

A search of her cellphone revealed she was viewing photos on Facebook at the time of the crash, state police said, and she also sent and received several text messages after she left Fargo.

Gordon, who was riding in the front seat of the SUV, was pronounced dead at the scene.

Her granddaughter and great-granddaughter suffered non-life-threatening injuries in the crash.

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Sletten, who said she does not remember the crash, appeared Wednesday in court.