A 6-year-old Virginia student took a gun to school Monday and investigators are trying to figure out how the child got ahold of the weapon, according to authorities.

The incident happened at Orange Elementary School, about 29 miles northeast of Charlottesville, the Orange County Sheriff’s Office shared on Facebook Monday afternoon.

A school staff member contacted an Orange County Sheriff’s Office School Resource Officer at 12:50 p.m. that day about a loaded firearm found inside the school. The school was then placed in safe school mode, the sheriff’s office shared online.

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The sheriff’s office said the firearm was found inside a backpack, so the school resource officer and a school administrator took the backpack. 

Investigators announced later that afternoon that the 6-year-old student brought the firearm to school, where an instructional assistant found the gun.

No one was hurt, and no threats were made, the sheriff’s office said.

The Orange County Sheriff’s Office is still investigating but said no arrests have been made so far. 

“The safety and security of our students and school staff remain our top priority,” the sheriff’s office said. “Out of an abundance of caution we will have additional law enforcement at the school for the remainder of today and tomorrow.”