Various members of Jemaah Islamiyah (also abbreviated JI), a violent Islamist group, were convicted in relation to the bombings, including three individuals who were sentenced to death.

On 9 November 2005, one of the top JI's bomb-maker and former Malaysian university lecturer Azahari Husin was killed in a police raid on a house in Batu, East Java.

On 9 March 2010, Dulmatin, nicknamed "The Genius"—believed to be responsible for setting off one of the Bali bombs with a mobile phone—was killed in a shoot-out with Indonesian police in Pamulang, South Tangerang.

The bombing occurred during one of the busiest tourist periods of the year in Kuta Beach, driven in part by many Australian sporting teams making their annual end-of-season holiday.

Imron and Idris dropped the motorbike at a place where it eventually attracted the attention of the caretaker.The final death toll was 202, mainly comprising Western tourists and holiday-makers in their 20s and 30s who were in or near Paddy's Pub or the Sari Club, but also including many Balinese Indonesians working or living nearby, or simply passing by.

[13][14][15] Timothy Britten, a Senior Constable with the Western Australia Police Force, and Richard Joyes were both awarded the Cross of Valour, Australia's highest civilian honour, for entering the burning remains of the Sari Club to free a badly injured woman from the wreckage; after they had rescued the woman on the third attempt, both men then searched for other potential survivors until the increasing intensity of the flames and of secondary explosions made this impossible.

[16][17][18][19][15] Natalie Goold initially escaped from Paddy's Bar after the bombings but then went back into the now-burning building, sustaining burns to her right arm and hand in the process, in order to rescue her friend, Nicole McLean, who had been heavily injured by the blasts.

After asking two men for their shirts in order to use these as improvised tourniquets for her friend's wounds, Goold secured McLean's transportation to a local hospital and then stayed with her during their medical evacuation to Australia.

[20][23] Lauren Munro was also caught up in the Sari bombing, being rendered unconscious; when he came to, he pulled free an injured woman who had been trapped under roof beams, and carried her out of the building and over a wall of rubble.

After managing to escape the now-burning building by climbing through its collapsed roof using severed electrical wire, Luke began a search for Gajado, during which she came across a badly injured Tom Singer.

[32][29][30][31] Separately from her Commendation for Brave Conduct award, a photograph of Luke helping Singer was published in news media around the world in the days after the bombings.

[30][29] Kusitino 'Kossy' Halemai, a Wallis and Futuna-born Australian citizen who was managing the Bounty Hotel in Kuta at the time of the attacks, sheltered survivors in the immediate aftermath of the blasts.

[35][37] James Parkinson, an emergency nurse, worked alongside Doctor Hogg from Wollongong in the Denpasar Sanglah Hospital running the trauma centre for the bombing victims.

Further search of Amrozi's home revealed copies of speeches by Osama bin Laden, and Abu Bakar Bashir, the radical Indonesian Muslim cleric reputed to be the leader of Jemaah Islamiyah.

Under questioning Amrozi revealed the names of six others involved in the bombing: Ali Imron, Imam Samudra, Dul Matin, Idris, Abdul Ghani and Umar Patek.

On 12 October 2005, a story in Australian broadcaster SBS's documentary series Dateline, called "Inside Indonesia's War on Terrorism", argued that the Indonesian military or police may have been involved in executing the attack.

[54] In April 2003, Indonesian authorities charged Abu Bakar Bashir (also rendered "Ba'asyir"), the alleged spiritual leader of Jemaah Islamiyah, with treason.

The Australian, US, and many other foreign governments expressed satisfaction with the speed and efficiency with which the Indonesian police and courts dealt with the bombings primary suspects, despite what they characterized as light sentences.

On 15 August, Riduan Isamuddin, generally known as Hambali, described as the operational chief of Jemaah Islamiyah was arrested in Ayutthaya, Thailand, the old capital one hour's drive north of Bangkok.

[61][62] Fahmi Bachmid, a lawyer for the family of Jafar Sodiq, a brother of Amrozi and Mukhlas, stated: "We lodged the judicial review to Denpasar court to question (previous) decisions."

[63] Supreme Court judge Djoko Sarwoko, however, said a "last-minute legal challenge by the relatives of Imam Samudra, Amrozi Nurhasyim and Ali Ghufron will not change or delay the execution."

[70] Ma'ruf Amin, deputy chairman of the Indonesian Ulemas Council, the chief body for Islamic clerics in Indonesia said of the men: "They did not die a holy death.

[citation needed] Kuta Karnival is conducted to commemorate and give respect to the victims of human violence and show the world the true spirit of local community survival despite terrorism attacks.

[citation needed] On 12 October 2010, Australian and Indonesian survivors of the 2002 bombings attended a solemn commemoration service to mark the eighth anniversary of the devastating attacks.

[72] In Lincoln Square on the western side of Swanston Street in Carlton, Melbourne, is a memorial representing the 88 Australians who died in the bombings, and notably the 22 from Victoria.

[75][76][77][78] A memorial which lists the victims of the bombings from Western Australia was opened on the first anniversary, and is situated on the ridge of Mount Eliza in Kings Park, overlooking the city.

On the northern side of Coogee Beach a memorial to the Bali bombing victims comprises three interlocking bronze shapes that have an abstract resemblance to three bowed figures supporting each other.

[79] South of Sydney, in the town of Ulladulla, a large youth centre is being built as a memorial to Craig Dunn and Danny Lewis, two local victims of the bombings.

On the fourth anniversary of the bombings the Prince of Wales and Duchess of Cornwall (now Charles III and Queen Camilla) unveiled a memorial in London, at the rear of the Foreign and Commonwealth Office Main Building, facing St. James's Park.

It stars Raelee Hill, Mirrah Foulkes, Alex Komang, Surya Saputra, John O' Hare, Sarah Treleaven, and Joshua Pandelaki.