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 .
NEW : U.S. Capitol Police are working with the FBI on the investigation . The FBI says the powder in a package sent to Rep. Raul Grijalva is 'nontoxic ' A campaign spokesman says there were two swastikas on the package . It is the third security issue at Grijalva 's district offices this year , a spokesman says .