An attorney for the mother of Alabama teen Natalee Holloway, who disappeared in Aruba, said a possible plea deal with a suspect in an extortion case is contingent upon his disclosing details about her death. Joran van der Sloot, long considered the chief suspect in Holloway's 2005 disappearance, is scheduled to appear in federal court Wednesday morning in Birmingham, Alabama, for a plea and sentencing hearing for a case in which he is accused of trying to extort $250,000 from Holloway's mother in 2010 to reveal the location of her body.