Suicide bomber Salman Abedi, who murdered 22 people at a pop concert in the Manchester Arena in a suicide bombing Monday, belonged to an Islamic State cell now discovered to have operated out of Manchester, according to files released by British security authorities Thursday morning. The ISIS records covered in those files named Raphael Hostey, a young graphic designer as the cell’s senior recruiter and radicalizer, who may also have caught Abedi in his net. Hostey left the UK in 2013 to join ISIS. After that his movements are not known. His address is listed in the same South Manchester neighborhood as Abedi. Police are currently sweeping it as a terrorist hotbed. Eight suspects are now in custody.