Published: Jul 30, 2012 4:15 PM EDT
Updated: Jul 30, 2012 8:59 PM EDT

LEE COUNTY, Fla.- Additional charges have been brought against an 18-year-old Lee County inmate after he threatened to kill President Obama, upon his release.

Christopher Davies was arrested in May on unrelated charges, but investigators say while in jail, he sent a note to jail officials, saying he would kill the President when released.

The letter reportedly said that officials could dismiss the threat as a joke if they wanted, but that they would have the Presiden's blood on their hands.