The school said it is cooperating with police in the investigation.
The man said he displayed the weapon to another driver during a road rage incident, police said.
An elaborate scheme involved imposter representatives of Amazon and the Federal Trade Commission, authorities said.
It was determined to be a hoax, while officers conducted a sweep of the school.
In another case, a resident was out $11,000 in a phone scam, police said.
It was determined to be a hoax, with the school carrying out a "soft lockdown."
Someone broke into a house by going through a window, police said.
A couple is out $30,000 after getting a pop-up on their computer, police said.
In another case, someone stole $28,000 from a resident's bank account, police said.
Another person was defrauded out of $3,500 for a so-called real estate transaction, police said.
She was arrested five days after the incident took place in a local neighborhood, police said.
In the last couple of weeks, the only other reported crimes were the arrests of two drivers.
The village aims to protect pedestrians at its 35 annual community events.
In another case, a Western Springs man was arrested on a charge of driving with a suspended license.
A $500 telescope was stolen from the front of a house, police said.
In another case, a man was arrested after a crash in the village, police said.
The result was an "overwhelming" increase in traffic on a residential street, police said.
The teen and two others also had marijuana and alcohol at a shopping center near South Campus, police said.
Local officers arrested two people on charges of driving with revoked licenses.
She is accused of threatening local police officers, according to a report.
In another case, a work van was stolen in a local neighborhood, police said.
The suspect told the truth when pressed by the village's detectives, police said.
A local detective's work led to the apprehension of a habitual criminal from Chicago, a report indicates.
Officers responded after they got a report of an intoxicated woman.
She told police about the fraud three hours after it happened.
The man was arrested after doing no work in return for a $5,000 check, police said.
Two students were cited on charges of possessing marijuana, police said.
In another case, a check was mailed in Western Springs and then cashed fraudulently, police said.
Western Springs reported major smoke and fire damage to a house.
The police department plans to buy different types of cameras, an official said.
Then the card was used to make fraudulent purchases, police said.
A Romanian organization may be behind the device on the local bank's ATM, police said.
In another case, a car's window was broken outside a strip mall, police said.
He still celebrates Mass in Western Springs and La Grange, according to a news release.
In another case, a woman is scammed out of $1,000 over the phone, authorities said.
In another case, a student was charged with possession of marijuana on South Campus.
In another case, a trio stole merchandise from a local store, police said.
In another incident, $3,000 worth of tools were stolen in a local neighborhood, police said.
Police in another county reported break-ins had occurred in Western Springs.
One was found with alcohol, the other with a small amount of marijuana, police said.