two brothers, as well as a third suspect, a suicide bomber, another suicide bomber in the paris attacks, were all known to the belgian authorities. they had all been on the radar of officials here months before the attacks took place. in fact, the two brothers were actually questioned, perhaps as early as february of 2015. why? because one of them, brahim, who was connected to this bar shut down due to the drug-related offenses, had been deported from turkey after trying to get to syria, presumably to be a volunteer jihadi fighter. deported back to belgium and then questioned by authorities here a long with his brother, who is at large. both of them were then released. belgian authorities saying they simply didn't have the man power to monitor both people supported of wanting to go to syria, as well as more than 100 belgian citizens who have gone and come back and are of much higher security priority for law enforcement here. john?