Ofc. Schauer, a 10-year veteran, was killed while off-duty in a car crash on Interstate 55 Sunday.

Illinois State Police said 35-year-old Erin Zilka, who has worked as a Joliet police officer for the past 12 years, was driving under the influence at the time of the crash.

According to police, a box truck and a pickup truck got into an accident and stopped on two southbound lanes of I-55 ? just north of US Route 30 near Plainfield at around 6 a.m. Sunday.

Shortly after, Zilka, of Plainfield, crashed a Dodge Durango into the stopped box truck. Ofc. Schauer was Zilka?s passenger at the time of the crash.

Zilka was hospitalized for non-life-threatening injuries. She is charged with a DUI and driving too fast for conditions.

State police said Zilka is out on bond. Joliet police said she is now under internal investigation for the crash.

On Monday night, Illinois State Police charged the driver who caused the initial crash with a DUI.

State police said Zilka could also face more serious charges, depending on the outcome of the investigation.
Her attorney, Jeffrey Tomczak, told WGN Zilka?s blood alcohol content was under the legal limit. He did not say exactly what it was.