[For new developments, read about what we now know on the Wednesday after the attacks.]

On Easter Sunday in Sri Lanka, coordinated bombings targeted churches, hotels and other sites, killing more than 290 people and injuring roughly 500 others.

The attacks in Sri Lanka, an island nation in the Indian Ocean, are the largest carried out on South Asian Christians in recent memory.

What we know about the attacks

• The explosions began around 8:45 a.m. on Sunday, and the deadliest appeared to be at St. Sebastian’s Church in Negombo. The other churches attacked were St. Anthony’s Shrine in Colombo and Zion Church in Batticaloa. There were also explosions Sunday morning at three hotels in the capital city of Colombo: the Shangri-La, the Cinnamon Grand and the Kingsbury.