Police in Indonesia’s capital, Jakarta, are studying DNA and other evidence to try to identify those behind the deadly attacks on two hotels on Friday.
At least nine people, including two suicide bombers, died in the attacks on the Ritz-Carlton and JW Marriott.
At least half of the victims are said to be foreigners but they are still to be formally identified.
A top anti-terror official was quoted as saying Malaysian militant Noordin Mohammed Top was linked to the attacks.
The BBC’s Karishma Vaswani in Jakarta says the Indonesian people have been truly shocked by these attacks as they thought they had put events like this behind them.
‘Shoulder to shoulder’
Investigators on Friday recovered an unexploded bomb and other explosives material from what they said was the "control centre" for the attacks – room 1808 in the Marriott.
See map of area
The attackers paid to stay at the hotel and smuggled in the explosives before detonating them in two restaurants on Friday.
CCTV footage showed one attacker wearing a cap pulling a bag on wheels into the Marriott restaurant, followed by a flash and smoke.
"I strongly condemn the attacks that occurred… in Jakarta and extend my deepest condolences to all of the victims and their loved ones"
Barack Obama
Eyewitnesses: Jakarta attacks Attack waiting to happen Indonesia braces for tourism blow Profile: Jemaah IslamiahA senior counter-terrorism official, Ansyaad Mbai, was quoted by the state-run Antara news agency on Saturday as saying the attacks were "clearly linked" to Noordin Mohammed Top.
He is believed to lead a splinter group of Jemaah Islamiah, which was blamed for the deadly 2002 Bali bomb attacks and a number of others in Indonesia.
Friday’s bombs contained nails, ball bearings and bolts, identical to ones used by Jemaah Islamiah, police said.
Security has been tightened across Indonesia in the wake of the attacks, with 500 troops put on standby to support police in the capital.
A new Zealander, businessman Tim Mackay, has been confirmed killed.
Australia fears for three missing nationals, including diplomat Craig Senger and Perth businessman Nathan Verity.
But details of the victims are still not confirmed. One health ministry report said the identified dead included two Australians, a New Zealander, a Singaporean and an Indonesian.
At least 17 foreigners were among the wounded, including eight Americans.
Other foreign nationals wounded included visitors from Australia, Canada, Hong Kong, India, Italy, the Netherlands, Norway, South Korea and the UK.
President Susilo Bambang Yudhoyono condemned the attacks as "cruel and inhuman".
US President Barack Obama said: "I strongly condemn the attacks that occurred… in Jakarta and extend my deepest condolences to all of the victims and their loved ones."
Australian Foreign Minister Stephen Smith is due to arrive in Jakarta on Saturday.
He said he wanted to stand "shoulder to shoulder with Indonesia at this terrible time".
The Manchester United football team had been booked to stay in the Ritz-Carlton next week ahead of a game in Jakarta.
The team has cancelled the Indonesian leg of their tour.
The attacks come just weeks after the peaceful presidential elections.
The country of 240 million people has been praised in recent years for maintaining a pluralist democracy while finding and punishing radical Islamists responsible for the series of bombings more than five years ago.
Back to story
</p
This article is from the BBC News website. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.
