A 62-year-old Romanian truck driver hit and killed an 85-year-old woman on the Veliko Tarnovo-Ruse road, police said.
The incident occurred on February 13 in the area of the village of Petko Karavelovo.
The driver hit the woman and she died.
His tests for alcohol and drugs are negative.
The man has been detained for 72 hours and an investigation is underway.