IS Killings Video: Voice Matches Abu Rumaysah

Sky News has been shown the strongest evidence yet that the masked militant in the latest Islamic State execution video is British terror suspect Abu Rumaysah. Voice analysis of the IS video has revealed "distinctive features" which support the assertion the masked killer is Abu Rumaysah. The IS recording was compared to other audio from Abu Rumaysah by one of the UK's top voice analysts and showed a "complex pattern of similarities" between the two.