On October 13 local time, Bloomberg reported that in a document submitted to the Delaware Court of Justice, Twitter lawyer said that Tesla CEO Elon Musk was under investigation by the U.S. federal authorities for his attempt to acquire Twitter.
It is reported that the lawyer of Twitter wrote in the document signed on October 6 that "Elon Musk is being investigated by the federal authorities for his acquisition of Twitter." The document was released on October 13.