Interpol is urging the international community to conduct a coordinated effort against the stream of foreign fighters joining extremists in the Middle East, reports said.
The recent statement was brought on by the brutal murder of journalist James Foley at the hands of a British national who joined the ranks of ISIL, AP reported.
More than a thousand radicals from Europe have joined militant fighters in Syria and Iraq, according to the news agency.
The international police agency released a statement Thursday calling the execution of James Foley depraved and that it "highlights the ongoing plight of other innocent people across the region".
Terrorists from the so-called Islamic State have startled the international community by taking control of swathes of land in Iraq in June.