Elgin man charged with first-degree murder after previously attacking a juvenile at a St. Charles middle school

ELGIN — Kane County State’s Attorney Jamie Mosser and Elgin Police Chief Ana Lalley jointly announced that Anderson A. Contreras, 21, of the 700 block of Dundee Avenue, was being charged with three counts of first-degree murder, a Class M felony, and one count of aggravated battery causing great bodily harm, a Class 3 felony.

Mosser alleges that on the afternoon of Oct. 12, Contreras struck a male victim with a knife in the torso area, which later caused that individual to die. Mosser added that the attack was without “lawful justification and with intent to kill.”

Officers from the Elgin Police Department were dispatched to the 1000 block of Cedar Avenue for a reported stabbing. After arriving on the scene, authorities located an adult male subject with life-threatening injuries. The victim was transported to Advocate Sherman Hospital in Elgin but was later pronounced deceased.

Upon further investigation, Contreras was taken into custody without incident.

On Oct. 14, Contreras was transported to the Kane County jail in St. Charles for pretrial detention proceedings, which are currently ongoing. Contreras is expected to remain in custody until further order of the court.

The Kane County Coroner’s office will conduct an autopsy on the victim on Oct. 15. Contreras’ next court appearance is scheduled for Oct. 24 at 9 a.m. in Courtroom 211 at the Kane County Judicial Center.

Just a few weeks before this stabbing incident, Contreras was taken into custody for striking a juvenile several times at a local middle school football field in St. Charles.

According to law enforcement, on Sept. 28 at approximately 2 p.m., Contreras approached and battered the juvenile at random. Contreras and the juvenile did not know each other. After the attack, Contreras fled the scene but was located by officers in the 1300 block of West Main Street where he continued to run away from authorities.

Contreras was charged with two counts of aggravated battery on a public way, a Class 3 felony, and Class A misdemeanors of battery causing bodily harm, battery making physical contact, and resisting a peace officer.