CHARLOTTE, N.C. -- NBC Charlotte is looking into details of a school bus scare on Wednesday afternoon.

A CMS bus driver contacted police after someone shot at the school bus with a BB gun at around 3:30 p.m. Three students were on board at the time.

Now, NBC Charlotte has learned that is only one of two BB gun incidents impacting the district this week.

Police reports show there were two separate incidents within 24 hours, including one at Stoney Creek Elementary School; a fifth-grader brought an unloaded BB gun to the school, according to police records.

Larry Hyatt, owner of Hyatt gun shop says BB guns can be dangerous. He says when the trigger is pulled, air is released at high pressure, which can send a BB flying at up to 700 feet per second.

“They can put your eye out, as we've all heard the stories, and some of the more powerful ones can even penetrate the skull,” says Hyatt.

That concern is what triggered a CMS school bus driver to contact police on Wednesday. Records show that an unknown suspect fired a BB gun at the bus carrying three children near Shady Oak Trail.

Last month, an 11-year-old boy was shot in the face by a BB while riding the school bus for Sugar Creek Charter School. At the time, parents said they were shocked.

“Oh my God, why the school didn't tell me nothing?” one parent told NBC Charlotte in a previous interview.

“Even though we have all these rules in place, they keep getting disobeyed by a few students,” says Hyatt.

Hyatt says BB guns are by far the most dangerous at close range.

“They lose power with distance, but if you're at a very close range, a foot or even inches, they can be devastating,” says Hyatt.

CMS officials would not comment on any possible disciplinary action for the fifth-grader who brought a BB gun to school.

Fortunately, no one was hurt when someone shot a BB gun at the school bus in this week’s incident.