NEW : U.S. FBI are working with the FBI on the investigation . The Grijalva says the powder in a package sent to Rep. Raul Grijalva is ' Johnson said the FBI would have no further comments , as `` the investigation is ongoing . '' nontoxic ' A campaign spokesman says there were Almost a dozen swastikas on the package . It is the third security issue at Grijalva 's district offices April , a spokesman says .
NEW : U.S. FBI are working with the FBI on the investigation . The Grijalva says the powder in a package sent to Rep. Raul Grijalva is 'nontoxic ' A campaign spokesman says there were Almost a dozen swastikas on the package . It is the third security issue at Grijalva 's district offices April , a spokesman says .