A former member of the Ohio National Guard who threatened to commit a mass shooting against a Columbus, Ohio Jewish school where he worked as a security guard was sentenced on Tuesday to prison on charges related to building ghosts guns and making terroristic threats toward students and parents.
The US Attorney”s Office for the Southern District of Ohio announced that Thomas Develin, 25, received a 71-month sentence along with six years of supervised release after signing a plea agreement admitting to building and selling the homemade ghosts guns for profit despite knowing they were not legal, according to WBNS.
Develin was also sentenced to six years in state prison on other charges, including making the threats against the school, which he will serve concurrent to his federal sentence.
The court learned that Develin advertised he was selling gun sears made with a 3D printer that turned a semiautomatic AR-style rifle into a fully automatic firearm considered an illegal machine gun under federal law.

Develin was arrested on March 31, 2022 after he posted antisemitic threats on social media.
According to WBNS, court documents said that Develin posted selfies with a semi-automatic handgun on March 11 on the social media platform, Discord. He also wrote statements such as, “I”m at a Jewish school and about to make it everyone”s problem” and “The playground is about to turn into a self-defense situation.”
Court documents also revealed that Develin posted that he “wanted to shoot parents coming to pick up their children.”
At the time, Develin was working as a security guard for Columbus Torah Academy in east Columbus.
When he was arrested, law enforcement found night vision goggles, ballistic plates, a ballistic helmet, first aid equipment and a massive cache of ammunition alongside several loaded magazines in his car, the news outlet reported.
Officers also found over 25 firearms in his home and vehicle. They also discovered manuals on IEDs (improvised explosive devices).