At around at 08:50 local time, a radicalized family of five rode motorbikes to a checkpoint at Surabaya police headquarters and detonated bombs. The family eight-year-old daughter survived the latest attack, police say. The attack came after another radicalized family carried out bomb attacks on three churches a day earlier. Police blamed the attacks on the Islamic State-inspired Jemaah Ansharut Daulah (JAD) network. The country has seen a resurgence of Islamist militancy in recent years but the scale of the attacks in Surabaya has raised fresh concerns about the potency of jihadist networks. Six civilians and four police officers were injured in the attack.