St. Louis County police investigators are trying to piece together the exact sequence of events that led to a deadly collision overnight on Chambers Road. The two-car crash took the life of 25-year-old Demetria Jeffery, known to loved ones as Mimi, and sent three other individuals to the hospital with critical injuries. Law enforcement officers spent hours at the scene gathering evidence to determine how the two vehicles collided.
Emergency calls started coming in at approximately 2:25 a.m. on Sunday, September 13. Callers reported a severe vehicle accident near the intersection of Chambers Road and Jacobi Avenue. Patrol officers and emergency medical personnel responded immediately to find two heavily wrecked cars sitting in the roadway with several occupants trapped inside.
Paramedics pronounced Demetria Jeffery dead at the scene shortly after arriving. Three other victims suffered life-threatening injuries in the impact and were rushed by ambulance to a nearby hospital for emergency care. Officers closed off the stretch of Chambers Road surrounding Jacobi Avenue to set up a perimeter and secure the crash zone.
Specialists from the St. Louis County Police Department’s Accident Reconstruction unit joined detectives from the Bureau of Crimes Against Persons to take over the investigation. Investigators spent the early morning hours taking measurements, recording tire marks, and analyzing the deformation of both vehicles to figure out speeds and directions prior to impact.
Crime scene technicians gathered physical debris scattered across the intersection while searching for any mechanical failures or road hazards that could have contributed to the crash. As is standard practice in fatal accidents, officers are also reviewing whether environmental conditions, visibility, or driver impairment played a factor in the collision.
Neighbors living near Jacobi Avenue reported hearing a loud crunch sound in the middle of the night, followed quickly by the arrival of blaring sirens and flashing police lights. The stretch of road remained taped off well into Sunday morning as tow trucks eventually cleared the wreckage from the lanes.
The investigation remains open and active as police wait on official medical examiner reports and technical reconstruction data. St. Louis County police are appealing to the public for help, asking anyone who drove through the area around 2:25 a.m. or has relevant dashcam video to contact detectives directly.
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