(CNN) First there was "Jihadi John," the now-notorious ISIS executioner with a British accent, featured prominently in several of the terror group's most gruesome propaganda videos.
Now, ISIS has introduced a new English-speaking executioner, and his accent is causing many to take note.
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He appears on a beach on the coast of Libya, dressed in tan fatigues and positioned at the center of over dozen black-clad militants leading an equal number of hostages -- Egyptian Coptic Christians they ultimately decapitate brutally in front of the camera.
As with previous ISIS videos, the intelligence community will be examining the footage to see what forensic clues can be gleaned about the speaker -- his height, his build, his choice of words -- all of these will be analyzed to determine who he could be.