Acquaintances went to check on the woman when they found her dead in a car in her driveway, police said.
"He is no longer considered to be in danger," police said in an update.
Officers discovered the gun while investigating a "suspicious" car parked on the street with its engine running and headlights on.
The Fourth of July enforcement campaign in Plainfield puts a special emphasis on unbuckled drivers, officials said.
After he was placed under arrest, the man, 30, said he would have killed the victim if it weren't for him drinking, court documents show.
Police were called to a convenience store parking lot to do a welfare check on a man asleep in a car, slumped over a steering wheel.
An officer searched the vehicle after seeing a small amount of suspected cannabis "in plain view."
Locals shouldn't worry if they see lots of squad cars, specialized equipment or personnel in tactical gear at the church Tuesday.
See which citations Plainfield officers issued during the enforcement period, which lasted from May 16-27.
The family safely evacuated the residence in unincorporated Plainfield after the fire started, officials said.
Police said a 911 caller also reported that a man in the vehicle asked him if he was in a gang before showing a gun.
The Friday morning incident, which drew a large police presence, is contained and not a threat to the public, Plainfield police said.
The firearm, which Plainfield police determined was stolen, was loaded with 27 live founds of ammunition, officials said.
An Indiana man was carrying brass knuckles and drugs while he was a passenger of a car driving through Plainfield.
The incident occurred in the parking lot of the man's apartment building in Plainfield, police said.
Plainfield police are taking a "no-excuses approach" and issue tickets "day and night" during the enforcement effort.
The man was pulled over when police found he was hauling six roosters and cockfighting equipment in his vehicle, according to reports.
The enforcement was implemented to help drivers avoid the consequences of distracted driving with the slogan: "Put the phone away or pay."
Police believe the teenage suspects were also responsible for damaging another property in Plainfield a week after the fire.
Joseph Czuba stood trial in February at Will County's Courthouse for the deadly stabbing of 6-year-old Wadee Alfayoumi at Czuba's house.
WESCOM received a 911 call Wednesday night reporting the blaze.
The family escaped the house fire safely, Plainfield fire officials said.
Two people were injured after a car crashed into their vehicle while it was parked on the side of the road with its hazards on, police said.
Injuries were reported in the Tuesday afternoon crash on Interstate 55, according to Illinois State Police.
A couple brought their Yorkshire terrier to a Plainfield vet two to three weeks after it was injured, police said.
Among the 234 cities that met the criteria for the new SafeWise study, where did Plainfield land?
A semi-tractor trailer overturned in a crash Thursday evening on Route 30 in Plainfield, police said.
Police said the Naperville man was driving with a revoked license for driving under the influence when he was involved in the DUI crash.
Officers will increase enforcement for Distracted Driving Awareness Month in April.
The fire started accidentally in an enclosed sitting room at the back of a Plainfield house's garage, fire officials said.
After leaving Buffalo Wild Wings without paying, the driver of a Dodge exited the lot and crashed into a car before fleeing, police said.
"There may be more to the story," the Plainfield mayor said, as the fire at the incident is being investigated by the state fire marshal.
The former restaurant was vacant at the time of the fire, officials said.
The fire was contained to solar panels installed atop the two-story house's garage, Plainfield firefighters said.
The Plainfield man was driving at least 20 mph over the speed limit before crashing into a car, causing a double fatality, documents said.
Police said Wednesday that they're investigating the "disturbances."
The incident occurred in the vicinity of Route 59 and 127th Street in Plainfield.
A former criminal prosecutor for Jim Glasgow, Will County Judge Derek Ewanic ruled in favor of Plainfield felony defendant Jordan Padilla.
The girl suffered a fractured skull and brain bleed, according to police, who charged her mother's 21-year-old boyfriend with battery.
The Plainfield Fire Protection District and Nicor worked to fix the leak Monday afternoon.