Christmas Eve 2000 Indonesia bombings
On 24 December 2000, a series of explosions took place in Indonesia, which were part of a high-scale terrorist attack by Al Qaeda and Jemaah Islamiyah. The attack, which occurred on Christmas Eve, involved a series of coordinated bombings of churches in Jakarta and eight other cities which killed 18 people and injured many others.
Source: Wikipedia — Christmas Eve 2000 Indonesia bombings (CC BY-SA 4.0)