Investigators were sifting through two bomb-damaged luxury hotels in Jakarta today for clues to those behind suicide attacks that shattered four years of stability in Indonesia.
Although officials could not say who they believed was responsible for yesterday's attacks, suspicion is pointing toward Jemaah Islamiah (JI), the radical militant Islamist group responsible for a string of deadly attacks that seemed to end in 2005.
"It has the signature of our 'friends'," said a retired Southeast Asian police officer now focused on counter-terrorism in the region.
The bombers struck the JW Marriott and Ritz-Carlton, luxury hotels popular with businessmen and diplomats and considered to be among the most secure buildings in the capital.
Police told a press conference today nine people were killed and 53 injured in the explosions, revising a previous death toll after investigators had found it difficult to identify some victims from the remains.
"Of the dead, we believe that three we haven't yet identified include the suicide bombers," Foreign Minister Hassan Wirajuda told a news briefing earlier in the day.
The casualties included citizens of Indonesia, the United States, Australia, South Korea, the Netherlands, Italy, Britain, Canada, Norway, Japan and India.
The attacks are a severe blow for President Susilo Bambang Yudhoyono, who was re-elected earlier this month in a landslide victory on the back of strong growth in Southeast Asia's biggest economy.
After being hit by a string of attacks against Westerners in the first part of the decade, Indonesia has been widely credited with successfully tackling militant groups - including the executions last year of the bombers responsible for killing 202 people in Bali in 2002.
Radical cleric Abu Bakar Bashir, who was alleged to have once headed JI, said the bombs were "a warning from God to Indonesia for not respecting God's law."
"Those who were involved were infidels or apostates, who wanted to impede the jihad in Indonesia," he added in a telephone text message to Reuters.
Questions will now be asked how supposedly tight security was so easily by-passed. Police said the bombers had checked into the Marriott as paying guests on Wednesday and had assembled the bombs in their room. A third bomb was found and defused in a laptop computer bag on the 18th floor.
A police spokesman told reporters a metal detector had beeped when a bomb hidden inside a laptop bag passed through the scanner, but the bomber had said it was a laptop and the security guards had let him go through.
International reaction to the bombings has been swift.
US president Barack Obama, who spent four years living in Jakarta as a child after his mother married an Indonesian, called the attacks "outrageous."
"These attacks make it clear that extremists remain committed to murdering innocent men, women and children of any faith in all countries," the White House said in a statement.