CUDAHY, Wis. (CBS 58) -- A couple has been criminally charged after authorities say their12-year-old child brought a handgun to Lincoln Elementary School in Cudahy. 

Nan Bin Li, 44, and Xaioping Wang, 40, have both been charged with one count of leaving a loaded firearm near a child. 

The sixth grader reportedly brought a loaded handgun inside a backpack to the school on April 30, after another student alerted school staff to the possibility of a weapon inside of a backpack that was left unattended by its owner. 

The student, according to the complaint, told authorities he found the gun in a nightstand in his parents' bedroom and stated he believed it belonged to his father. 

The complaint says, the student admitted to taking the gun to a park in St. Francis a few days prior and to a park on April 29. The student stated, the complaint says, he must have forgotten the gun was inside his backpack. 

Authorities searched the student's phone and reportedly found photos of the handgun dating back to October of 2024, meaning he had access to the firearm since at least then. 

The student's mother was interviewed, and reportedly stated her husband kept his gun in a nightstand drawer in their bedroom and kept their other guns in a gun safe. 

Officers searched their home and located two additional firearms in a gun safe.