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Hazardous materials crews were spotted at the scene testing the letter for hazardous materials, and it was deemed to be nontoxic, the city said.
Regardless of what the circumstances turn out to be, neighbors said this is part of a wider issue — namely lack of better options for kids in their area.
As of Sunday night, there were no reports of injuries — and there was also no word on the extent of the damage.
The man authorities believe shot two Minnesota lawmakers and their spouses in politically motivated shootings early Saturday morning is now in custody.
All the victims in the shooting near California Avenue and Thomas Street were expected to survive.
Rookie right-hander Kumar Rocker pitched five scoreless innings with help from some pickle juice.
Among those in attendance was 67-year-old prostate cancer survivor Clark Atwater, who threw out the ceremonial first pitch.
Police said J'Adore Frazier was taken from his grandparents' home in the 9000 block of South Aberdeen Street around 4 p.m. Friday, June 6.
Around 8:47 a.m., the Marengo Fire & Rescue Districts responded to the intersection of Collins Road and Vermont Road in unincorporated Woodstock for a reported crash with entrapment.
Chefs at the legendary Chicago restaurant packed up cases of soda and cooked up 160 cheeseburgers.
A Buick Regal veered left into an eastbound lane of Black Road, hitting a Buick Encore head-on.
A 34-year-old man was traveling southbound in a Lexus SUV when he hit a Lexus sedan traveling eastbound on Thomas Street.
Andrew Wagner traveled to Northwestern Medicine for a second liver transplant following his battle with stage 1 lung cancer.
Willie Mathews Jr., 21, of Matteson, Illinois, is facing felony charges including false personation of a police officer with a weapon.
Investigation into the incident revealed that 12 people were either taken to or arrived at area hospitals with gunshot wounds.
Transgender women athletes are now excluded from women's events at the Olympics after the IOC agreed to a new eligibility policy on Thursday which aligns with President Trump's executive order on sports ahead of the 2028 Los Angeles Games.
The Lake County, Indiana, Sheriff's Office said a driver was hospitalized after a car crashed into a house and flipped over near Crown Point Wednesday evening.
The Chicago Board of Education has selected interim CPS CEO Dr. Macquline King to lead Chicago Public Schools permanently, and will vote to appoint her to the position Monday.
Warm weather, spring break, and a crowd of hundreds of teens in the heart of downtown Chicago created chaos Wednesday night, raising new questions over snap curfews and what changes in public safety leadership at City Hall might mean for the summer ahead.
Soccer fans have launched a formal complaint with the European Commission against FIFA over World Cup ticket prices.
Attorney General Todd Blanche said the ballroom is "being constructed for the physical safety and security of all Presidents, their families, staff, Foreign Dignitaries, and guests."
Chicago Mayor Brandon Johnson got a warm sendoff Sunday as he prepares for a trip to the Vatican.
U.S. officials and negotiators were discussing a process to reopen the Strait of Hormuz, sources briefed on the conversations said.
The Trump administration on Friday announced a sweeping policy designed to make it harder for immigrants already in the U.S. to get permanent residency.
Senator Dick Durbin has fired former federal prosecutor Sheri Mecklenberg from her role as counsel to the Senate Judiciary Committee following allegations of prosecutorial misconduct with the grand jury in the Broadview Six case.
As thousands of Chicagoans wrap up road trips over the Memorial Day holiday weekend, gas prices in the city have reached the highest levels seen in four years.
Consumer and environmental advocates said Monday that they found overcharges buried in the most recent rate-hike request by Nicor.
One week away from Memorial Day weekend and the unofficial start of the summer travel season, with gas prices remaining high, negotiations were set to resume Monday at the largest oil refinery in the Midwest.
Chatham residents say they're losing a vital resource as Walgreen's prepares to close its store near 86th and Cottage Grove.
According to AAA, the average price of a gallon of regular gas in Chicago was $5.17 on Friday, up from $3.75 a year ago.
Menopause can feel like a major turning point for millions of women, with symptoms like fatigue, weight gain, and brain fog can make women feel like their bodies aren't their own.
The head of the World Health Organization says Ebola has killed at least 7 people in Congo, but the U.N. agency says it knows the epidemic "is much larger."
A person suspected of having hantavirus in Winnebago County, Illinois, turned out to be a false alarm, officials said Monday.
The DuPage County Health Department has confirmed its first positive tests for West Nile virus in pools of mosquitoes this year.
The Kane County Health Department was set Monday to offer a free mental health awareness webinar.
The owners of Gene & Georgetti steakhouse are suing a concessions operator over their expansion at Midway International Airport.
DraftKings announced Monday that it is closing its sportsbook operation at Wrigley Field after only about two years.
After more than 80 years, there will be no Ann Sather restaurant location in the 900 block of West Belmont Avenue in Chicago's Lakeview community, effective in June.
Flight attendants at Chicago-based United Airlines have approved a new labor contract, marking their first pay increases in six years.
The Chicago Fire FC announced Wednesday morning that its new stadium in the South Loop will be named McDonald's Park.
Former CBS Chicago anchorman Bill Kurtis has signed off from his role as the judge and scorekeeper on the NPR weekly news quiz show "Wait Wait… Don't Tell Me!"
Pop star Britney Spears said she was "totally fine" to drive and had not had a drink for about six hours when she was pulled over by the California Highway Patrol.
After nearly a century on the air, CBS News Radio signed off, with the final reports airing on Friday, May 22.
Stephen Colbert hosted "The Late Show" for the final time Thursday night as the franchise came to an end after 33 years.
The Museum of Broadcast Communications in Chicago already has one of Stephen Colbert's old desks, and now it will receive the whole "Late Show" set.
Recent videos online show Chicago police officers escorting street vendors in the Loop and confiscating their merchandise. One expert says there seems to be an uptick in enforcement, whereas usually vendors were mostly left alone.
The pope says that while the technology is a dazzling human achievement, it could possibly fuel conflict, weaken truth, and turn people into data points if misused.
Little to no rainfall is in sight through the end of the month. Chief Meteorologist Albert Ramon has the latest in First Alert Weather.
Spouses, parents, and children at Abraham Lincoln National Cemetery spent Memorial Day honoring loved ones who made the ultimate sacrifice.
As thousands of Chicagoans wrap up road trips over the Memorial Day holiday weekend, gas prices in the city have reached the highest levels seen in four years.
Chicago's lakefront is officially open for the summer season, with thousands heading to the beaches this Memorial Day.
On Memorial Day, planes and flags fly for the fallen as a crowd gathers for the annual ceremony at the cemetery.
As thousands of Chicagoans wrap up road trips over the Memorial Day holiday weekend, gas prices in the city have reached the highest levels seen in four years.
Chicago police said officers were on foot in the area dispersing a large crowd on Sunday just before 3:30 a.m. when the crash occurred.
Illinois State Police said that the driver was allegedly traveling in the right lane when the front of her vehicle struck the rear end of a truck-tractor semi-trailer.
Data centers popping up all over Illinois are sucking up millions of gallons of water a day, at a pace that the state can't keep up with. But experts say tapping into wastewater resources would steer the state in a new and much safer direction.
Many Metra riders with disabilities have been forced to reroute their trips due to Monday's closure of the only elevator providing access to the Electric Line at Millennium Station in downtown Chicago.
Pothole complaints continue everywhere, but especially on one street in the Pullman neighborhood on the South Side of Chicago.
People in Lincoln Park and Lakeview have rallied against a plan to build a new industrial ComEd electrical substation in their neighborhoods, pushing local and state leaders to get involved.
Monday marks one year since Illinois enacted Karina's Law — legislation aimed at taking firearms out of the hands of people accused of domestic abuse.
Munetaka Murakami homered, Anthony Kay pitched six sparkling innings and the Chicago White Sox stopped Minnesota's four-game win streak with a 3-1 victory over the Twins.
Henry Davis hit a go-ahead solo home run in the seventh inning to lead the Pittsburgh Pirates to a 2-1 victory over the Chicago Cubs.
With a loaded roster back, the St. Laurence High School baseball team is primed for what they hope is another long playoff run as the No. 1 seed beginning Wednesday at home.
Rafael Devers hit San Francisco's third grand slam in a seven-day span, a tiebreaking, fifth-inning drive that led the Giants over the Chicago White Sox 8-5.
Freshman Gabriella McCollester scored a career-high four goals for Northwestern in a win over North Carolina in the NCAA Division I women's lacrosse national championship.
Burglars struck a liquor store in the South Chicago community on Chicago's South Side in a crash-and-grab early Monday morning.
A man was expected in court Monday on charges that he shot and killed a family member last week in Chicago's Auburn Gresham neighborhood.
The chief of police in New Chicago, Indiana, stood accused Sunday of selling a pawn shop a gun that was being held as evidence and then trying to have it bought back, among other allegations.
Chicago police detectives on Sunday were investigating multiple shootings and other violent incidents stemming from gatherings of teens this Memorial Day weekend.
A woman was sexually assaulted in the LaBagh Woods forest preserve on Chicago's Northwest Side this weekend, and police were asking for help from the public in finding the attacker.