A Chicago mother has been charged with child endangerment after a gun in her second grader�s backpack accidentally discharged at school, injuring a 7-year-old classmate, police said Wednesday.

The 28-year-old woman appeared in court on Wednesday on three misdemeanor child endangerment counts. A judge ordered her release from Cook County Jail on $1,000 bond.

During the hearing, prosecutors alleged that the woman�s 8-year-old son found the gun underneath her bed and took it to Walt Disney Magnet School on the city�s North Side on Tuesday. The mother has a valid firearm owners identification card.

According to police, the backpack was in the boy�s classroom when, just before 10 a.m. on Tuesday, the gun discharged. The Chicago Sun-Times reported that prosecutors said during the hearing that the bullet ricocheted off the floor and grazed the child�s abdomen. The child was taken to a hospital in good condition, police said.

In an email to parents, the school�s principal said the bullet �caused some debris to ricochet in your child�s classroom, which hit a member of our school community and caused minor scrapes.� The school did not respond to a request for comment on Wednesday.

A teacher then grabbed the backpack and gave it to security officers who found a Glock 19 handgun inside, prosecutors said during the hearing.

The woman�s attorney, Rodger Clarke, acknowledged that the gun should have been locked up and not just placed under the bed. But, he said, �This wasn�t something she planned or something she did on her own volition.�

Cook County Judge Michael Hogan was not impressed by that argument.

�This may not have been an intentional act, but it is a supremely negligent act,� he said.

He continued: �We are inches away, possibly centimeters away, from a very different case and a very different tragedy.�

(AP)