Tuesday's deadly blasts in Brussels shine the spotlight on Molenbeek, a poor suburb of Belgium's capital city that has long been a hotbed of Islamist extremism, NBC News reported.
Paris attacks suspect Salah Abdeslam was nabbed in Molenbeek during a raid on Friday, and on Tuesday, explosions rocked the city's metro stations and the international airport, killing at least 15 and wounding dozens more.
Young people who feel like they don't belong in Europe are turning to radical Islam, experts have warned, likely laying the foundation for the region's recent string of attacks.
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"We are breeding a generation of kids who are estranged from their own societies," U.K.-based expert on radicalization Bill Durodie said.
With a population of just 11 million, tiny Belgium has the highest number per capita of militants fighting in Syria and Iraq, many of whom are from Molenbeek, according to experts.