(The Lion) — A North Carolina middle school teacher was arrested and charged with drug trafficking during a roundup in which officials found enough fentanyl to kill 625,000 people.

Saadia Marie-Denise Owen, 32, an English teacher at Southern Guilford Middle School in Greensboro, was taken into custody Wednesday after authorities seized about 1,250 grams of fentanyl.

She was charged with two counts of level 3 felony trafficking in fentanyl and is being held on a $3 million bond.

Also arrested was Jordan Allen Jefferson, 37, who was charged with drug trafficking and felony aiding and abetting. He was denied bond, WGHP reported.

Guilford County Schools told McClatchy News that Owen resigned “effective June 25,” the same day she was arrested.

She had worked at the school since January 2016 and had no disciplinary record, a district official told the Greensboro News & Record, leading some media outlets to speculate she may have dealt drugs during summer breaks.

“Reducing fentanyl-related overdoses and deaths remains a core objective of the Guilford County Narcotics Task Force,” the Guilford County Sheriff’s Office said in a release. “This seizure may have saved lives and sends a strong message to those trafficking deadly drugs in our community.”