April 18- Federal prosecutors filed criminal charges on Thursday against a Mississippi man, who worked as an Elvis impersonator, for threatening to harm US President Barack Obama by sending him a letter that initially tested positive for the deadly poison ricin.
Paul Kevin Curtis, 45, was believed to have sent three letters, all with identical wording and type-written on yellow paper, to Obama, U.S. Senator Roger Wicker of Mississippi and Justice Court Judge Sadie Holland of Lee County, Mississippi.
The FBI confirmed the presence of ricin in the letters to Obama and Wicker, but said it is "not aware of any illness as a result of exposure to these letters."
A criminal complaint filed in US District Court for the Northern District of Mississippi charged Curtis with threatening to harm Obama and making other threats through the US Postal Service.
If convicted, Curtis, of Corinth, Mississippi, faces maximum penalties of 15 years in prison and $500,000 in fines plus three years supervised release.