The majority of Europe's jihadist foreign fighters have criminal backgrounds, said a report published on Tuesday by the International Center for the Study of Radicalization and Political Violence (ICSR) at King's College in London.
"The presence of former criminals in terrorist groups is neither new nor unprecedented. But with Islamic State and the ongoing mobilization of European jihadists, the phenomenon has become more pronounced, more visible and more relevant to the ways in which jihadist groups operate," the report said.
The study, which compiled a database of 79 known jihadists with criminal pasts, showed that 57 percent of them had served prison sentences prior to radicalization, with 27 percent of those having radicalized while incarcerated, "although the process often continued and intensified after their release."
Read more: Deutsche Welle
