Indonesians are vowing not to be cowed by terror after a series of suicide bombings and shooting attacks in Jakarta.
There was no immediate claim of responsibility but police said the perpetrators were “imitating” November’s Isis attacks in Paris.
At least seven people, including five suspected attackers, died and several more were injured.
As news of gunfights and explosions in the Indonesian capital spread on social media, people started tweeting the hashtag #KamiTidakTakut, meaning “we are not afraid”.
The whole point of terrorism is to spread terror, to make us afraid. Together, with God, we're unbeatable. #KamiTidakTakut— Kamasean Matthews (@kamasean07) January 14, 2016
We are strong, we are united #KamiTidakTakut— Anggi Widyastuti (@anggiwdyst) January 14, 2016
Other popular hashtags included, #JakartaBerani, meaning "brave Jakarta", urged people to “pray for Jakarta” and also helped people verify that their friends and families were safe using #SafetyCheckJKT.
Police said five of the attackers and two other people were killed Thursday near the Sarinah shopping mall, which is surrounded by international shops and restaurants, a cinema, UN and government offices.
General Anton Charliyan, a spokesperson for Indonesia’s national police, said the perpetrators were “imitating” the Paris attacks but it was unclear whether Isis was directly involved.
The Indonesian President, Joko “Jokowi” Widodo, called on people not to give in to fear.
In pictures: Jakarta attacks
In pictures: Jakarta attacks
People carry an injured police officer near the site where an explosion went off in Jakarta
Indonesian special forces officers identify victims at the scene of a bomb blast in Jakarta
Police gather outside a restaurant near the scene of an attack in central Jakarta, after militants launched a gun and bomb assault in the center of the Indonesian capital
The scene of a bomb blast at a police station in front of a shopping mall in Jakarta
Indonesian soldiers in armoured vehicles at the scene of a bomb blast in Jakarta
An Indonesian special forces officer identifies victims at the scene of a bomb blast in Jakarta
A police armored vehicle is parked outside a Starbucks Cafe near where an explosion went off in Jakarta
Police officers take cover behind a car during a gun battle with attackers near the site where an explosion went off in Jakarta
A member of the police bomb squad unit approaches the scene of an explosion following an attack on a police box in central Jakarta
Indonesian forensic policemen work inside a cafe after a bomb blast in front of a shopping mall in Jakarta
“This act is clearly aimed at disturbing public order and spreading terror among people,” he said.
“The state, the nation and the people should not be afraid of, and lose to, such terror acts.”
It came after several security crackdowns following terror threats in recent weeks and was the first major violence in Indonesia's capital since explosions targeting two hotels killed seven people and injured more than 50 in 2009.
The 2002 bombing in a nightclub on the resort island of Bali killed 202 people, mostly foreigners.
Those attacks were claimed by Jemaah Islamiah, an al-Qaeda linked Islamist group with cells in Indonesia, Thailand, Singapore, Malaysia and the Philippines.
Additional reporting by AP