LONDON — A British-accented militant who has appeared in beheading videos released by the Islamic State group in Syria bears “striking similarities” to a man who grew up in London, a Muslim lobbying group said Thursday.

Mohammed Emwazi has been identified by news organizations as the masked militant more commonly known as “Jihadi John.”

London-based CAGE, which works with Muslims in conflict with British intelligence services, said Thursday its research director, Asim Qureshi, saw strong similarities, but because of the hood worn by the militant, “there was no way he could be 100 percent certain.”

The Center for the Study of Radicalization and Political Violence at King’s College London, which closely tracks fighters in Syria, also said it believed the identification was correct.

British counterterrorism officials wouldn’t confirm the man’s identity.

“Jihadi John” appeared in a video released in August showing the slaying of American journalist James Foley. A man with similar stature and voice also featured in videos of the killings of American journalist Steven Sotloff, Britons David Haines and Alan Hemming and U.S. aid worker Abdul-Rahman Kassig.