An Indonesian policeman stands guard at the 2002 Bali bombing memorial monument, ahead of the 10-year anniversary of the incident in Kuta, Bali resort island, Oct 11, 2012. Indonesian police have warned of possible attacks on commemorations for the tenth anniversary of bomb blasts on the island of Bali and have brought in reinforcements to protect the thousands due to attend, including Australia's prime minister. [Photo/Agencies]

An armed Indonesian policeman surveys the scene of a bomb blast at a nightclub in Kuta on Indonesia's popular resort island of Bali, in this Oct 14, 2002 file photo. Commemorations will be held in Indonesia and Australia on Oct 12, 2012 marking the tenth anniversary of bomb blasts on the island of Bali that killed 202 people, including 88 Australians. [Photo/Agencies]