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NORTH OLMSTED -- Police in North Olmsted say for the third time in three days they were investigating a threat at the high school.

On Tuesday, a bomb threat was found written on notebook paper. A juvenile student was arrested in that incident.

Today and on Wednesday, a threat was found written in the same girls' restroom. An adult student was arrested in those incidents.

Police say in all three cases, the school was evacuated and the students returned to class after the all-clear was given.