MAPLEWOOD, Minn. - A third-grader was able to reach in and shoot off a police officer's gun at a Maplewood school on Monday, according to Maplewood Police Chief Scott Nadeau.

The school liaison officer was spending time with third- and fourth-graders at Harmony Learning Center at about 1:45 p.m. on Monday, according to Nadeau. He said they were sitting on a bench and a child placed his finger in the officer's holster and pulled the trigger, shooting a round through the holster into the ground.

No one was injured. According to Nadeau, "The holster was a department-approved level 3 security holster, with trigger guard, that typically cannot be touched or fired in the holster, but the child’s small finger was able to reach inside."

Nadeau says Maplewood police are reviewing the incident to prevent it from happening again.