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GLENNS FERRY, Idaho -- School district officials continue to investigate a bomb threat at Glenns Ferry High School.

The threat forced the evacuation of students on Thursday, and has resulted in a campus lock down on Friday.

Principal Cody Fisher says staff won't allow students to leave the school on Friday. The security restriction includes lunch breaks and other off-campus activites. Fisher says similar precautions are also being taken at the nearby elementary school, including cancelling recess.

On Thursday, approximately 130 students were evacuated after school officials reported receiving a bomb threat. Law enforcement officials then searched the building with bomb-sniffing dogs.

No bomb or other dangerous materials were found.

Fisher says district officials expect to return to business as usual on Monday.

Parents with questions about student safety should call the district office at 208-366-7436, or contact the Elmore County Sheriff's Office at 208-587-2121.

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