JAKARTA, Indonesia — The Indonesian government’s crackdown on militant Islamic groups has been widely praised in recent years, particularly by the United States. Proof of its success rested in the fact that, after annual terrorist attacks earlier this decade, none had taken place in nearly four years.
But as a clearer picture has begun emerging of Friday’s coordinated suicide bombings at the JW Marriott and Ritz-Carlton hotels here, terrorism experts and some Indonesian officials are focusing on what they describe as weaknesses in Indonesia’s antiterrorism campaign. Although the authorities have arrested hundreds of militants and severely weakened Jemaah Islamiyah, the Southeast Asian terrorist network, they have had much less success in uprooting the culture that breeds extremism.
The authorities have failed to aggressively check the radical clerics, Islamic schools or publishing houses that allow extremists to recruit and raise money for their operations, these experts said. Even moderate, politically powerful religious leaders, who are against violence, oppose any perceived government interference in their affairs. And as democracy has become entrenched since the fall of President Suharto a decade ago, the authorities have appeared hesitant to use tactics that may recall the era of military rule.
“The bombings should be a catalyst for Indonesia to develop a more comprehensive approach,” said Rohan Gunaratna, head of the International Center for Political Violence and Terrorism Research at Nanyang Technological University in Singapore. “They’ve been too focused on catching operators when they need to be tougher in actually preventing terrorism. They should take the boxing gloves off.”
The police have still not arrested anyone in the attacks, which killed seven people, including six foreigners, and wounded 50 more. On Wednesday, the police released sketches of two men suspected of being the suicide bombers and who were initially counted among the victims. Nanan Soekarna, a spokesman for the national police, said that DNA tests showed that the remains of neither of the suspected bombers matched a man named Nur Said, a militant whom the local news media had identified as one of the suicide bombers.
On Wednesday, investigators also detained a woman identified as Ariana Rahma, who is believed to be married to Noordin Muhammad Top, the prime suspect in the attacks, the local news outlets reported. She is said to be the daughter of the head of an Islamic boarding school in Cilacap, Central Java, that was raided last month. Investigators in that raid discovered bomb-making materials identical to those used Friday, the police have said.
The authorities have said that the bomb-making methods and the nature of the attacks indicated strongly that they were the work of Mr. Noordin, a Malaysian extremist who is believed to be behind the attacks earlier this decade. He was once a senior official in Jemaah Islamiyah and is the most wanted fugitive in Southeast Asia. Many extremist groups operating in Indonesia are said to have ties to him.
Though Mr. Noordin has evaded capture over the years, the Indonesian authorities have greatly disrupted Jemaah Islamiyah’s leadership. Once a network with operations throughout Southeast Asia, experts said, it now survives mostly in Indonesia in loosely affiliated small groups. The Indonesian government has also run a much-praised program in certain prisons that works to persuade Islamic militants to give up extremism.
But experts said that the authorities had been reluctant to rein in clerics and schools that had allowed extremists like Mr. Noordin to continue operating.
“On the law enforcement side, the achievements have been certifiable,” said Sidney Jones, an expert on Islamic terrorism at the International Crisis Group’s branch here in Jakarta. But Ms. Jones said that with an estimated 50 schools with ties to Jemaah Islamiyah, fugitives were sheltered, new recruits were found and money was raised.
“These places remain nodes of communication that are critical to keeping the network alive,” she said. “Everybody knows where these schools are, but there’s been a sensitivity in dealing with them because people don’t want to see Islamic education stigmatized.”
Islamic schools, called “pesantrens” here, have long played a central role in many Indonesian communities. Only a few are said to espouse violent tactics. But the schools, which are politically powerful, have long resisted greater government scrutiny.
“It would be very difficult to start questioning ulamas from these schools,” said a senior Indonesian counterterrorism official, referring to Islamic scholars at the schools and speaking on the condition of anonymity because he was not allowed to speak to the media. “Even moderate Indonesians would react negatively against that.”
The official said that sensitivity about carrying out any measure with a tinge of the pre-democratic Suharto era also complicated investigators’ activities. While permits were needed to publish books in the past, publishers of radical ideology are now flourishing in Indonesia and account for the biggest source of such thought in Southeast Asia.
“Since democratization, we’ve been in a conundrum,” the official said. “Do we start banning books?
“We’re conscious that we have not eradicated the deeper problems in the last five years,” the official added.
Mr. Gunaratna, of Nanyang Technological University, said Indonesia needed to adopt tougher antiterrorism laws, like those in Singapore and Malaysia, which allow suspects to be detained and questioned longer without bringing charges.
“That’s the reason there has been no attack inside Singapore or Malaysia,” he said. “Since democratization, some members of the Indonesian elite have the misguided view that these measures are antidemocratic.”