(Idaho Falls, Idaho-AP) -- Two 18-year-old men have been arrested on suspicion of building the pipe bomb that caused the evacuation of about 20 homes in Idaho Falls yesterday.
Investigators say the pair made the device and wanted to blow it up at a nearby sand dunes area.
But it somehow fell out of their car while they were driving late Monday night.
When they turned around to pick it up, a sheriff's deputy pulled them over for failing to have a license plate on the car. He gave the driver a ticket and let them drive away from the scene, not knowing there was a pipe bomb on the road.
A team from Tooele, Utah detonated the bomb in a nearby field yesterday.
Police say they don't think the bomb was built to hurt anyone. But it's a felony in Idaho to make explosive devices.
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