DOVER — A 58-year-old woman allegedly known for drinking heavily fell asleep in front of a parked tractor-trailer that later fatally ran over her Monday morning, a Dover Police investigation concluded.

Authorities released details of Pamela Guy’s death on Tuesday, a day after she was found lying dead in a yard in the 200 block of College Road near Conwell Street. Police and medical personnel were called to the scene at approximately 8 a.m., spokesman Master Cpl. Mark Hoffman said.

A few hours after the incident, police issued a news release describing the location of a deceased African-American female in her 50s. The victim was not named pending notification of next of kin and the cause of death was under investigation.

On Tuesday, police said they believed Ms. Guy had been drinking heavily on Sunday and helped the tractor-trailer driver — a 52-year-old Dover man — wash his vehicle. That night, investigation determined, Ms. Guy returned to the area and then slept in front of the vehicle.

Ms. Guy was accidentally killed when the driver began to leave for work Monday morning, according to authorities.

Police found Ms. “Guy was known to drink heavily and often sleep in random spots in the neighborhood.”