RICHARDSON (CBSDFW.COM) – Parents at a Richardson school are reeling after a first grader brought a loaded gun to class this morning.

Police took possession of the firearm and no one was injured.

A letter sent home to parents of students at Hamilton Park Pacesetter Magnet School says the gun was discovered in a backpack while a teacher was reviewing her students take home materials.

School officials said the 6-year-old child did not even know she was carrying it.

Word of the incident upset parents who were outside Monday afternoon to pick up their children.

“I think about all the kids who were put in danger because anything could’ve happened. I’m fearful right now,” said Tina Tatum, grandparent.

A school resource officer was called after the discovery and an investigation determined the student, “…did not intend to use the weapon or harm anyone,” according to the school letter.

Sources told CBS 11 News that the student’s mother put the loaded gun in the child’s backpack over the weekend because she didn’t want it in their house and forgot about it.

That excuse didn’t sit well with some of the parents interviewed by CBS 11.

“It’s really bothering me. Parents need to be able to more careful with their guns and what they are doing and it never should have gone in a backpack,” said Wyndie Badaway, parent.

Andrea Hauglie has a first grader enrolled at the school. She is more forgiving about the incident and praises the staff for how they handled it.

“I think it was an accident based on what the letter says. I don’t think any kids would purposely bring a firearm to school.We have really sweet kids here and it’s just a really unfortunate situation,” she said.

The student wasn’t identified but was pulled from class Monday and will be allowed to return.

Sources said Dallas Police are still considering whether to charge the mother with a crime.