NEW : Man " ` ` vehemently denied the allegations against him , '' his lawyer says . No injuries reported from the hospital yet , the FBI says . Suspect : A fourth test proved inconclusive . Kevin Curtis is charged with sending threats . They were addressed to President Obama , a judge , Sen. Roger Wicker .
NEW : Man " ` ` vehemently denied the allegations against him , '' his lawyer says . No injuries reported from the hospital yet , the FBI says . Suspect : Kevin Curtis is charged with sending threats . They were addressed to President Obama , a judge , Sen. Roger Wicker .