PONTIAC, Mich., (WXYZ) - Pontiac High School was evacuated and the students were sent home for the day after a 14-year-old boy showed another student what he called "a bomb" in his backpack.
Using bomb-sniffing dogs, investigators with the Oakland County Sheriff, Michigan State Police Bomb Squad, ATF and the FBI searched and cleared the school and the homes of the teen's mother and father.
No device was found but investigators believe the student who reported it to school officials did see something with wires that appeared to be an explosive.
We're told it was just outside the school building where the 14-year-old showed the other student the device.
It's unclear if he ever passed through the metal detectors with the device or left it outside, but the 14-year-old was also seen on surveillance video walking around parts of the building he was not expected to be in.
No device was ever found. And investigators say the teen has not been cooperating and is denying even showing anything to the other student.
The teen is in custody at the Oakland County Children's Village for making the alleged threat. Possible charges will be determined by prosecutors when the case is presented to them on Wednesday.
Police say this was the boy's first day in regular classes after being bumped out of the school's accelerated program.
Oakland County Sheriff Michael Bouchard tells 7 Action News that it was odd for the teen to show the item to the other student because they are not even friends.
K-9 units from the Macomb County Sheriff's Office and Southfield Police also responded to assist in the search.
On Wednesday, the school building will be open to faculty as an already scheduled day for in-service activities.