Sotloff fixer Yosef Abobaker says U.S. authorities never interviewed him about ISIS . This trip was n't the first time that Abobaker worked as a journalistic `` fixer '' -- or a jack-of-all-trades guide who does translations and arranges interviews . FBI says it ` ` is actively investigating the savage murder of Steven Sotloff '' Abobaker says masked ISIS fighters surrounded him , two , three armed guards . FBI believes a border guard informed ISIS about Sotloff 's location .
Sotloff fixer Yosef Abobaker says U.S. authorities never interviewed him about ISIS . FBI says it ` ` is actively investigating the savage murder of Steven Sotloff '' Abobaker says masked ISIS fighters surrounded him , two , three armed guards . FBI believes a border guard informed ISIS about Sotloff 's location .