The third tactical shift is perhaps the most interesting, and that is the use of an IED hidden in the anal cavity of the bomber. Suicide bombers have long been creative when it comes to hiding their devices. In addition to the above-mentioned IED in the camera gear used in the Masood assassination, female suicide bombers with the Liberation Tigers of Tamil Eelam have hidden IEDs inside brassieres, and female suicide bombers with the Kurdistan Workers’ Party have worn IEDs designed to make them look pregnant. However, this is the first instance we are aware of where a suicide bomber has hidden an IED inside a body cavity....
One other concern about such a device is that it would likely have a catastrophic result if employed on an aircraft, especially if it were removed from the bomber’s body and placed in a strategic location on board the aircraft. Richard Reid’s shoe IED only contained about four ounces of explosives, an amount that could conceivably be smuggled inside a human.
The good news:
While keistering an IED is a novel tactic, it does present operational planners with some limitations. For one thing, the amount of explosive material that can be hidden inside a person is far less than the amount that can be placed inside a backpack or is typically used in a suicide belt or vest. For another, the body of the bomber will tend to absorb much of the blast wave and most of any fragmentation from the device. This means that the bomber would have to get in very close proximity to an intended target in order to kill him or her. Such a device would not be very useful for a mass-casualty attack like the July 17 Jakarta hotel bombings and instead would be more useful in assassination attempts against targeted individuals.