Derby High School underwent one of its two annual unannounced lockdown drills today at 10 a.m., with police dogs sniffing for drugs.
No contraband was found, said principal Fran Thompson.
The principal will be notifying parents in a message later today.
“Once again we were drug free and back in classes,” Thompson said at 10:30 a.m.
The school was temporarily “locked” so no one could come or go as police searched.
Derby police Lt. Justin Stanko said drug-sniffing dogs from the Milford and Naugatuck police departments searched the high school and the middle school across the street.
