Updated

An Illinois mom behind a viral Facebook post spoke to Fox 2/News 11 Wednesday.

Her son, Hunter, 4, has been suspended from his preschool for bringing a shell casing from a fired bullet to school.

He’d been at the preschool for about a year, she said, and now was in tears.

Neither she nor Hunter's dad knew it, but he found something he thought was pretty neat and he took it to school Tuesday to show his friends.

FLORIDA FOX REPORTER FINDS ILLEGAL IMMIGRANTS ACCUSED OF BOLTING FROM SUV CRASH

“This is a spent .22 caliber bullet casing,” Kristy Jackson said, holding the object that got Hunter into so much trouble.

“I was met with a stone-faced teacher who said that my son had a shotgun bullet.  I was horrified thinking, ‘where could he have gotten this?’” Jackson said, recalling when she picked up Hunter from the preschool in Troy, IL, Tuesday.

Hunter’s parents got a letter from the school’s director saying Hunter had been suspended for 7 days.  The letter says they’d repeatedly been reminded about Hunter using other toys as make believe guns, in violation of school policy including Monday, when Jackson picked Hunter up from the preschool, the day before the shell casing incident.

BLUE LIVES MATTER FLAG FORCED DOWN, DEEMED 'RACIST'

The school’s vice-president told Fox 2 the suspension was for more than the shell casing; that the school was simply following its discipline policy.  He said he couldn’t go into further detail, citing confidentiality concerns.

“He’s cried about it and he doesn’t understand why his school hates him,” Jackson said of her son.

Her Facebook post about it being shared across the country.

Read more at Fox 2.