A family of five riding on two motorbikes carried out a suicide bombing at Surabaya Police headquarters on Monday morning, May 14.
Video footage of the latest attack on the police headquarters shows two motorbikes approaching a checkpoint just before the blast. Six civilians and four police officers were injured, authorities said.
This came after another family carried out bomb attacks on three churches on Sunday, in an attack claimed by the Islamic State (IS) group.
The country has been on high alert after bombings on Sunday by a single family targeted three churches in Surabaya.
A mother and two daughters, aged nine and 12, blew themselves up at Diponegoro Indonesian Christian Church, while the father and two sons targeted two others.
In the first attack, the sons – aged 16 and 18 – rode motorcycles into Santa Maria Catholic Church at around 07:30 am and detonated explosives they were carrying.
After reportedly dropping his wife and daughters off to carry out their attack, the father, Dita Oepriarto, drove his own bomb-laden car into the grounds of Surabaya Centre Pentecostal Church, police said.
The coordinated attacks killed 13 people and injured more than 40. They were the deadliest bombings in Indonesia in more than a decade.
Photo courtesy of AP Photo/Achmad Ibrahim