SOUTH ELGIN, Ill. - A 43-year-old man allegedly threatened juveniles while holding a knife after an altercation on Tuesday evening in the western suburbs.

Brandon J. Mumme, of South Elgin , was charged with aggravated assault on public property and aggravated assault with a deadly weapon, according to South Elgin police.

What we know:

Police said Mumme allegedly entered a school in the 700 block of Mill Street in South Elgin with a weapon. He was also seen driving a car in the school parking lot.

Two juveniles at the school told police they had been riding electric scooters through the parking lot when a car entered and cut them off.

The juveniles exchanged words with the suspect, and they then separated.

The juveniles later returned to photograph the car’s license plate when t

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