MARIETTA, Ga. (AP) — One of Georgia’s largest school systems states that a districtwide lockdown before this month has been triggered by somebody hacking on its computer system.

The alert message tripping a”code red” throughout the 107,000-student district has been researched as a potential offense, Cobb County school officials announced Wednesday.

District officials say they decided that the sign was deliberately triggered and just influenced Cobb County and other school districts.

The district stated it can not yet disclose who mounted the attack or .

“We don’t yet understand the reasons of these assaulting the district AlertPoint system,” the school district said in a statement. “Nevertheless, it seems that the crime was committed to disrupt schooling throughout the district, produce district-wide turmoil, and create stress from the district’s pupils, parents, and employees. This wasn’t a’prank,’ nor is it treated like you.”