A $7500 reward is being offered to find the person responsible for leaving threatening notes at Highland Park High School after a fifth note was discovered.
This latest note , found on top of a stairwell, referenced a bomb threat according to those on the scene.
This is the third day in a row students and their parents have been alerted to the threatening notes.
The school said it has no reason to believe the threat is credible and the school day continued.
However, armed police and FBI agents are on the campus investigating.
The school is considering bringing in metal detectors if needed.
The note is the fifth one found in recent months. Past notes that referenced a bomb, including one found on Tuesday, have prompted lockdowns and early dismissals.
The school said everyone continues to be on high alert and students now only have restricted access to the restrooms.
KDFW FOX 4
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