Investigators have been examining body parts and other forensic evidence in an attempt to identify the two bombers, one of whom is believed to be Indonesian.
They were decapitated in the explosions, and confirming their identity could help determine if they had links to Noordin.
The official Antara news agency said on Sunday that the government was intensifying efforts to find Noordin and trace the network's finances to try to uncover any links to Friday's blasts.
Officials have identified five of the dead - three Australians, one New Zealander and one Indonesian.
Among the dead was Craig Senger, the first Australian government official to be killed in a terrorist attack, Prime Minister Kevin Rudd said on Sunday. Mr Senger worked as a Trade Commission officer at the embassy in Jakarta.
Officials said 17 foreigners were among the wounded, including eight Americans and citizens of Australia, Britain, Canada, Hong Kong, India, Italy, the Netherlands, Norway and South Korea.
Jemaah Islamiyah rose to prominence after the 2002 nightclub bombings in the beach resort of Bali that killed 202 people, most of them foreigners.
It staged attacks in Indonesia in each of the next three years: a 2003 car bombing outside the JW Marriott hotel, a 2004 truck bombing outside the Australian Embassy, and triple suicide bombings on Bali restaurants by attackers carrying bombs in backpacks in 2005.
After the government launched a massive anti-terrorism campaign, no major attacks had been reported since then - until Friday's explosions.
Remnants of the bombs found outside the hotels had circuits that were 'identical' to those in explosive devices used in previous attacks on Bali, the national police spokesman said Sunday.
Police were also looking for connections between Friday's bombing and explosives discovered last week in the Cilacap region of Central Java, which were buried in a garden at the house of Noordin's father-in-law, who is also at large.
While the attacks rekindled old anxieties, Indonesians interviewed Sunday said they did not believe the bombings signalled a resurgence by the militants, who want to establish an Islamic state in the region.
The Islamist extremists enjoy little support among the country's largely moderate public. -- AP