Police in Western Australia have charged a man in connection with explosive chemicals that were recently found south of Perth.
AAP reports about 3kg of TATP was discovered by a member of the public on 28 October hidden underwater near a jetty at Leschenault Estuary, Australind.
A second package was found at the same site three days later.
And a third suspicious package was found on Friday at a disused caravan site at Peppermint Grove Beach, Capel.
All three packages were destroyed in controlled detonations, the third on Saturday morning.
A man was taken into custody for questioning after a dawn raid by the Tactical Response Group.
On Saturday afternoon, police said the man faces five charges of making or possessing explosives in suspicious circumstances.
He is being held in custody and is due to appear before Bunbury Magistrates Court on Monday.
TATP was used in the London terrorist bombings on 7 July, 2005. AAP reports it is highly volatile and particularly susceptible to heat, friction and shock.