Jacksonville, Illinois Police Arrest 23-Year-Old After Valentine’s Day Shooting That Left One Woman Dead
Arrest follows fatal shooting on West Chambers Avenue
A 23-year-old Jacksonville, Illinois, woman has been arrested and charged after a Valentine’s Day shooting that killed a 31-year-old woman, authorities said.
Police responded to reports of gunfire in the 800 block of West Chambers Avenue shortly after 5:40 p.m. on Saturday, Feb. 14, 2026. Officers found a victim suffering from a gunshot wound and initiated emergency medical response. The woman was transported to a hospital, where she later died.
The Morgan County Coroner identified the victim as Marcquila Harris, 31, of Jacksonville. An autopsy was scheduled for Monday, Feb. 16, 2026.
Charges filed as multi-agency investigation continues
Investigators worked overnight following the shooting, and on Sunday, Feb. 15, 2026, police arrested Marissa Teubner, 23, also of Jacksonville. She was booked on charges of first-degree homicide and aggravated discharge of a firearm.
Authorities have not publicly released additional details about the circumstances leading up to the shooting, including any information about a possible motive or the relationship between the victim and the suspect, if any. Officials also have not announced whether a firearm was recovered, or whether additional charges could follow.
Law enforcement described the investigation as ongoing. In similar homicide investigations, information released early can change as interviews are completed, forensic testing is finalized, and prosecutors review evidence to determine how the case will proceed in court.
What is known so far
Date and time: Saturday, Feb. 14, 2026, shortly after 5:40 p.m.
Location: 800 block of West Chambers Avenue, Jacksonville, Illinois.
Victim: Marcquila Harris, 31, of Jacksonville; pronounced dead after being taken to the hospital.
Suspect: Marissa Teubner, 23, of Jacksonville; arrested Sunday, Feb. 15, 2026.
Filed charges: First-degree homicide; aggravated discharge of a firearm.
Anyone with information has been urged to contact local police or submit tips through CrimeStoppers channels.
Next procedural steps
The case is expected to move through standard felony-court procedures, including an initial court appearance, determination of pretrial detention or release conditions, and future hearings as prosecutors evaluate evidence. The autopsy findings may become part of the investigative record and can inform how the case is charged and prosecuted.
Teubner is presumed innocent unless and until proven guilty in court.