CENTRALIA — Centralia police have released details surrounding an early Thursday morning incident that left a 54-year-old Centralia woman dead from an apparent traffic incident.

According to police, surveillance video from around 1:10 a.m. Thursday in the downtown Centralia area showed a woman who appeared to be Tracey L. Cook walking around the southeast corner of Broadway and Locust.

At the same time, a semi-tractor trailer is seen traveling northbound on Locust. The semi-tractor trailer slows down at a red traffic light.

The semi-tractor trailer then gets the green light and begins to increase speed. Cook is then seen lunging towards the passenger side of the semi-tractor trailer as it passes.

Once the semi passes the surveillance video the female is no longer seen. It appears that the female jumped onto the passenger side of the semi-tractor.

They traveled approximately one block before it appears the female fell off the semi-tractor and was run over by the semi-trailer.

Centralia Police Investigators located the driver of the semi-tractor trailer and the tractor.

The Illinois State Police Crime Scene Unit processed the vehicle and the driver was reportedly cooperative with the Investigators.

Investigators say the driver was apparently unaware someone had jumped onto the outside of the semi-tractor.

Police reportedly had contact with Cook shortly after midnight Thursday when officers responded to her North Hickory Street home on a complaint someone was messing around with her trailer behind her home.

She reportedly told officers her boyfriend just left the residence and she remembered he took her keys. Cook stated that she was going to walk to his house to get her keys.

Officers along with Cook checked around her residence and were unable to locate anyone.

Around 1 a.m., a Centralia Officer still patrolling the area saw Cook at Noleman and Walnut Street and reported Cook was carrying a baseball bat.

Cook told the officer she was going to her boyfriend’s house to retrieve some keys.

Another officer looking for a vehicle that had fled discovered Cook in the intersection of Noleman and Locust streets. Officer quickly determined Cook was deceased.

Officers closed the intersection and contacted Centralia Police Investigations along with the Illinois State Police Accident Reconstruction Unit and the Marion County Coroner.