Jefferson County, Idaho (CNN) - A teenager's hand was severed in an explosion Wednesday night in Jefferson County, Idaho.
The sheriff's office said two 14-year-old boys found an explosive device.
The mother of one of the boys said they found it sticking out of some weeds near a granary -- and twisted the top off.
She said it blew off the fingers of one teen and blew out the eardrum of the other.
The chief sheriff's deputy described exactly what the kids had found.
"Two juveniles had found an Omniblast explosive device that's used for distraction and it was used by the military years ago; they're now discontinued."
The teen who was more severely injured is expected to recover, but doctors are doubtful that his fingers can be reattached.
That's according to his parents.