New Delhi, March 1 -- The explosion at a madrasa in Keraniganj, near Dhaka, has exposed more than a clandestine bomb-making operation - it has highlighted the re-emergence of an ISIS-linked network with potential cross-border ramifications for South Asia. As Islamic State Bengal (ISB) reportedly names a "Dhaka Regional Commander", security analysts warn that Bangladesh's militant ecosystem may be re-entering a dangerous phase, with implications extending into India's eastern corridor and beyond.

According to explosive experts, the blast was caused by the accidental detonation of Triacetone Triperoxide (TATP) precursors and suicide vest components. TATP - highly sensitive to heat and friction - has long been a hallmark of ISIS-style bombm...