MADISON, Wis. (AP) — Police in Madison are searching for whoever left a dead woman by the side of a road.

The Wisconsin State Journal reported in Saturday’s editions that a passerby found the 34-year-old woman near the side of a road on Madison’s north side around 6:30 a.m. on March 3.

The body showed no visible signs of trauma. Police say she apparently died of a drug overdose.

A small, silver SUV with a possibly damaged rear window was in the area around the time the body was found, police said.