Authorities have identified the second British member of an ISIS group popularly called "the Beatles," the Washington Post and BuzzFeed report.
He is 32-year-old Alexanda Kotey, from London.
The group of four Englishmen frequently appeared in videos of hostage executions and are believed to serve as guards for foreign prisoners. Their leader, Mohammed Emwazi, dubbed "Jihadi John," was killed by a US drone attack last year.