A student is in custody after allegedly threatening Frederick High School, the principal said.
Principal Pete Vargas sent a letter to parents that said he was informed of a "potentially dangerous situation" at 10:45 a.m. on Wednesday.
"I received a report that a Frederick High student had made a threat against the school," Vargas wrote to parents. "I immediately alerted the Frederick Police Department and placed the school in lock out mode, with all exterior doors locked and the school SRO and staff on alert."
Vargas said police told him the student was in custody 35 minutes later.
"Fortunately, no threats were carried out," Vargas said.
No details about the threat were released.