**EDS: GRAB VIA PTI VIDEOS** New Delhi: Tight security arrangements near the National Investigation Agency (NIA) headquarters, in New Delhi, Friday, Apr. 11, 2025. The NIA on Friday took Mumbai attacks mastermind Tahawwur Hussain Rana into 18-day custody, during which he will be questioned in detail to unravel the complete conspiracy behind the deadly 26/11 terror strike. (PTI Photo) (PTI04_11_2025_000031B)