Country-Made Bomb (Desi / Sutli Bomb)
Definition
Hand-thrown device built around KClO3 plus sulphur (or KNO3 plus S plus C, or amorphous P plus KClO3), wrapped in jute, paper or sutli twine, with a sutli or nitrocellulose fuse.
- Common charge
- KClO3 plus sulphur, or KNO3 plus S plus C, or amorphous P plus KClO3
- Casing
- Jute, paper, or sutli twine wrapping
- Ignition
- Sutli fuse or nitrocellulose fuse
- Deployment
- Hand-thrown
Common questions
Why are these devices hard to standardise forensically compared to factory-made explosives?+
Country-made bombs are assembled from whatever oxidiser, fuel, and casing materials are locally available, so charge composition, wrapping, and fuse type vary batch to batch and maker to maker. Forensic examiners must characterise each seized device or post-blast residue individually rather than matching it against a fixed factory formulation.
What does post-blast residue analysis of a desi bomb typically target?+
Analysts look for chlorate, nitrate, sulphur, or phosphorus residues consistent with the charge combinations used, along with fragments of the jute, paper, or twine casing and fuse material, since these residual traces can indicate which of the common formulations was used even after detonation.
Related terms
- Four-Component IED Model
- Initiator, main charge, switch (trigger), power source. Plus the container or casing that confines the blast and supplies shrapnel. Every IED maps...
- IED (Improvised Explosive Device)
- Any explosive device built outside the military or commercial supply chain. The explosive, the trigger or the casing (often all three) is...
- Initiator
- Starts the explosive train: blasting cap or detonator (electric or non-electric), safety fuse, nitrocellulose fuse, or shock tube.
- Main Charge
- The bulk explosive. Low explosive (black powder, KClO3 mixtures) for desi bombs; high explosive (RDX, TNT, PETN, ANFO) for pressure-cooker, tiffin and...
- Render-Safe Procedure (RSP)
- NSG / state BDS actions to neutralise a suspect device without detonating it. Tools: disruptors (water-cannon, PAN), portable X-ray, robots (DRDO Daksh,...
- Switch (Trigger)
- Closes the firing circuit. Time-delay, command-wired, radio-controlled (RCIED), or victim-operated (pressure plate, tripwire, anti-handling).
- VBIED / SBBIED
- Vehicle-Borne IED (truck, car, scooter) and Suicide Bomber-Borne IED (belt, vest, body-worn). Pulwama 2019 was a VBIED; Rajiv Gandhi 1991 was an...