Brussels Islamic State terror cell
The Brussels Islamic State terror cell was a sleeper cell of the Islamic State (IS), an Islamic jihadist terrorist organisation primarily based in Syria and Iraq. The IS sub-group was involved in large-scale attacks in Paris in November 2015, in which 130 people were killed, and Brussels in March 2016, in which 32 people were killed.
Source: Wikipedia — Brussels Islamic State terror cell (CC BY-SA 4.0)