Milton High School went into lockdown this morning after a live shotgun round was found outside the building's main entrance, police said.
The school was locked down as a precautionary measure after a parent discovered the ammunition around 9 a.m., Police Chief Richard Wells said.
School administrators contacted police after the discovery, and officers led a canine search of the building as students were kept in classrooms. Students' bags were also checked by officers and school administrators, police said.
The lockdown lasted just over four hours, Wells said. No weapon was found and the students were not in danger, he said.
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