Home ministry officials told the parliamentary panel that those detained under the PSA can challenge their detention in a designated tribunal.
Images from Day 1 of the US Open in New York, on Monday.
Sunday's operation, the biggest in the Belgian capital since the Paris attack, began shortly after a government meeting on the crisis and a decision to maintain for a second day the highest possible alert level in Brussels.
Robbed of prey as people fled, Omar Perez came marching back and shot bullet after bullet into Prudhvi Raj Kandepi's head, thus ensuring that a man he had never met before, known nothing of, would never get up again.
The level of preparedness of Daesh sleeper cells is evident from the fact that it took just four days after Salah Abdelslam's arrest to execute the Brussels attacks, says Lieutenant General Syed Ata Hasnain (retd).