FILE - This undated file still image from video released April 7, 2011, by GlobalPost, shows James Foley of Rochester, N.H., a freelance contributor for GlobalPost, in Benghazi, Libya. A Libyan government spokesman says four journalists detained since early April have completed an administrative hearing and will be released Tuesday or Wednesday.(AP Photo/GlobalPost, File)

Middlemen in touch with ISIS or its associates say the group has turned a grim new page in its deadly hostage trade — by trying to sell the remains of at least one of the U.S. citizens it has executed in Syria.