Police have confirmed the second suspicious package found in a West Australian waterway last week was more of the deadly terrorist chemical explosive TATP.
A massive police operation was launched after a member of the public discovered the package containing 3kg of TATP hidden underwater near a jetty at Leschenault Estuary at Australind, south of Perth.
The first package was mistakenly identified as illicit drugs and transported through the Perth CBD and stored in WA police major crime headquarters.
After the explosive was identified, it was delicately moved to a local racetrack before being detonated.
A second package was discovered in the estuary 36 hours later, and was eventually detonated underwater by police and navy divers
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After confirming the second package was TATP, the WA Police issued a social media appeal for information.
Acting Commander Scott Higgins said no further chemicals had been found around the waterway.
The incident has prompted a review of police protocols when suspicious substances are discovered.
Police continue to investigate who hid the chemicals in the estuary and are not ruling out the possibility they had sinister plans, including terrorism.
TATP, which can be manufactured from household ingredients and is known as "Mother of Satan", was used in the 2005 London bombings.
The discoveries last week coincided with a major gathering of foreign ministers and diplomats in Perth, the Indian Ocean Rim Association for Regional Cooperation meetings.
