Federal authorities have charged an Oklahoma man with sending hundreds of letters containing nonhazardous white powder

Federal authorities have charged an Oklahoma man with sending hundreds of letters containing nonhazardous white powder to public officials ahead of the 2024 and 2026 elections. The powders turned out to be yeast or flour, though not all letters have been fully tested, the FBI said in a court filing made public Tuesday. Robin Martin is charged with conveying a hoax and mailing threatening communications. Martin was expected to make his initial court appearance Tuesday afternoon in Oklahoma City. Online records do not list an attorney to comment on his behalf.