A video claims to show the killing of Mohamed Said Ismail Musallam . The video, which was posted on YouTube and has been viewed more than a million times, shows an unidentified man in his 20s or 30s being shot by unknown assailants. ISIS claims the 19-year-old is an Israeli spy .
A video claims to show the killing of Mohamed Said Ismail Musallam . Musallam 's family says ISIS recruited him . ISIS claims the 19-year-old is an Israeli spy .