A 26-year-old male student was arrested Tuesday on charges of violating the explosives control law after he was found in possession of what appeared to be homemade gunpowder while near the U.S. Embassy in Tokyo last month.Before his arrest, Shogo Koyama, a university student from Suita, Osaka Prefecture, had been quoted as saying during voluntary questioning that he had "come to throw (explosives) into the embassy" after learning how to make the mixture online, according to investigative sources.Koyama is suspected of placing around 160 grams of gunpowder into a cloth-wrapped cup and carryi…READ FULL ARTICLE