Suspected IS militants detained in Indonesia, Malaysia

“We need to pay very serious attention to the rise of ISIS”, Jakarta police chief Tito Karnavian told reporters outside the city’s oldest department store, Sarinah, where the attack unfolded on Thursday.

Police said late on Friday that two of the attackers had been identified as raids continued across the country to track down any other militants in the networks they belonged to. He said the group had received funding from unidentified sources within Islamic State, which has claimed responsibility for the attack.

ISIS released a statement saying it had targeted citizens of countries which are part of the global coalition fighting the group, which controls parts of Syria and Iraq.

Chief security minister Luhut Pandjaitan confirmed media reports that three people suspected of plotting an attack were arrested at a house in the city of Depok, just south of Jakarta.

A year ago, he left for Syria to join the frontlines of Islamic State, and police believe Naim was closely involved in coordinating Thursday’s assault.

Workers clean up the area where Islamic militants mounted an attack Thursday in Jakarta.

Map showing central Jakarta in Indonesia where several people died Thursday in explosions and gunfire. The blog of Bahrun Naim, an Indonesian militant in Syria, urged his Indonesian followers to study the methods of the Paris attackers who killed 130 people in November.

Its reputation for tolerance took a battering from the Bali bombing that killed 202 people, mostly foreigners, and from other high-profile attacks on Western targets such as hotels by Jemaah Islamiyah militants who wanted to replace civilian government with a caliphate.

Indonesian President Joko Widodo has made a stop at some of the businesses affected by Thursday’s attacks.

The motive for the attack is not yet clear, but CNN security analyst Bob Baer said it had the hallmarks of an Islamic State operation.

“This is actually an indication of really cooperation between China and Indonesia on terrorism, and also because China and Indonesia share the concern of the threat of terrorism”, Wang said.

Police said Saturday they had arrested 12 people in raids across Indonesia, including a man they believe handled financing for the Jakarta attacks, money that authorities allege came from ISIS.

“Now we are sweeping in and outside Java, because we have captured several members of their group, and have identified them”, national police spokesperson Anton Charliyan said. “The services provided by them are good, cheaper than in Indonesia”, he said. Indonesians were shaken but refusing to be cowed a day after a deadly attack in a busy district o…

Indonesia has the world’s largest number of Muslims, the vast majority of whom practice a moderate form of Islam.

But concern has risen in the multi-faith nation over growing hardline Islamic views and the country’s potential as a militant breeding ground.