A Tahlequah man injured himself when a blasting cap exploded as he was trying to wire it to a cell phone, according to law enforcement sources.
Local and federal authorities launched an investigation early last Friday after Jeremy Ramirez, 27, showed up at a local hospital suffering serious wounds from an apparent explosion.
A photograph of Ramirez in custody shows apparent shrapnel wounds across his torso and a heavily bandaged hand.
Subsequent searches of homes in Tahlequah and Stilwell turned up more possible explosives.
Investigators indicate witnesses told them Ramirez was trying to wire a blasting cap to a cell phone when it exploded, injuring him.
Federal charges are expected.
It's unclear what purpose Ramirez may have had in mind for the explosives.