The criminal damage to property incident was reported June 8.
In an internal email, Sheriff James Mendrick also said his office is starting a program called Policing in a Diverse Society.
Police advised residents to keep their doors and windows locked.
DuPage County State's Attorney Robert Berlin encouraged protests, but denounced criminal acts.
Police say the incident was not linked to "a protest or riotous activity."
Justin Kmitch, a spokesperson for the sheriff's office, told Patch they expect the looting attempts to ramp up after dark.
Sheriff James Mendrick said, "We will take any measures to keep this a safe and peaceful county."
DuPage County coroner Richard Jorgensen confirmed with Patch Thursday afternoon that the person found was Anna DeJong.
Coats, purses and other valuable items were reported stolen from the vehicles, which had been left unlocked.
Police were called to the 100 block of East Elm Street for a report of a burglary in progress.
Police say Peter Agosto, 24, of the first block of Sterling Circle, posted bail and was released Wednesday morning.
Police found the remnants of what appeared to be Molotov cocktails at the scene.
Jermaine Keith Devon Echoles, 33, of the 1600 block of Valley Forge Court, was charged in connection with Saturday's incident.
Most of the thefts and burglaries took place between April 29 and 30, according to a police bulletin.
Police say two suspects broke the glass doors to get into the VFW post and steal an ATM.
Police say Dominick Taylor, 50, was arrested in Michigan Tuesday after a $2 million warrant was issued.
Police say the incident took place near the intersection of Roosevelt Road and Wheaton Avenue.
Police say a man asked a young girl for her phone number and address and then asked her to get into his car.
Police say Marcus Livous was found dead in the 1000 block of North Avers Avenue early Tuesday.
Police say the man who stole the car was just released from custody less than a half hour earlier.
Police say they found a steak knife with "apparent blood" on it in a garbage can and that the victim was stabbed more than 30 times.
Police say to be wary of apps or people going door to door during this time.
Police say Joel Munoz-Valdez, 24, stabbed the man in the back several times after an argument turned violent.
Wheaton fire officials say no one was injured in the blaze.
Police say two men in an older-model SUV approached the girl and asked if she wanted a ride.
Police say Todd and Patricia Olshefski were found in Daytona Beach, Florida weeks after a warrant was issued for their arrest.
Demarion Chambers, 23, pleaded guilty to vehicular hijacking in connection with the incident.
Phillip Smith, 28, of Chicago, was sentenced to 21 years in prison after pleading guilty.
Police were first called to the 700 block of Childs Street for a report of a discharged firearm, which turned out to be false.
Police say four or five men approached the car and told the driver to get out.
In the scam, the caller apparently pretends to be with the DuPage County Sheriff's Office asking for money.
Police are looking for three suspects in connection with Wednesday's burglary.
Police say Stephon Little, 27, drove the getaway car after his "accomplice" bound Sprint workers and stole thousands in items.
Fire officials say the blaze broke out in the 200 block of West Illinois Street Monday night.
Police say the man left the store with $40,000 in merchandise after ordering employees to open the safe.
The fire left a fifth-floor unit in the apartment building uninhabitable.
Police are investigating the death of 37 year old man near Starved Rock State Park.
One man is accused of a using "large hunting knife" to stab someone at the home.
The burglary took place at the AT&T at 109 Geneva Rd.
The app will allow the sheriff's office to reach residents and will give residents a new way to share crime tips.