MIAMI (AP) — A federal grand jury has indicted a man suspected of causing a bomb hoax at a downtown Miami building that houses the Israeli and German consulates.Federal prosecutors said Friday that 52-year-old William Rolland of Auburn, Calif., has been formally charged with one count of conveying a false bomb threat. If convicted, he faces up to five years in prison.Investigators say that on July 25, Rolland walked into a lobby of an office building on North Biscayne Boulevard and told people there that he would return the next day and "blow up the building." No explosives were found.Arraignment is set for Aug. 23. Rolland's attorney said Saturday his client was at the building on business, did not make the statement attributed to him and is innocent.