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THE EVIDENCE AGAINST THE NORTH

* Fragments recovered from the waters near the Koreas' maritime border indicate the torpedo came from communist North Korea.
* Pieces recovered at the sinking site 'perfectly match' the schematics of the torpedo included in introductory brochures provided to foreign countries by North Korea for export purposes.
* A serial number on a torpedo fragment also was consistent with markings from a North Korean torpedo that South Korea obtained years earlier.
* Investigators also confirmed that several small North Korean submarines and a mother ship supporting them left a North Korean naval base on the western coast two to three days ago prior to the attack, and returned to port two to three days after the attack.
* All submarines from neighbouring countries were either in or near their respective home bases at the time of the incident.