Members of the Islamic extremist group al Shabaab had taken 23-year-old Mumin Abdikarim Yusuf into custody on Oct. 28 after the 15-year-old boy reported him to the militants, an area source told Compass Direct News. Yusuf's body was found on Nov. 14 on an empty residential street in Mogadishu, with sources saying the convert from Islam was shot to death, probably some hours before dawn.