Attacks by suicide bombers in Sri Lanka on Sunday killed at least 321 people. The victims came from at least eight countries and included worshipers at Easter Sunday services at three churches that were among the targets of the coordinated bombings.

Mass funerals began on Tuesday, a national day of mourning.

Coffins arrived one by one at St. Sebastian’s Church in Negombo, where as many as 100 people, including many children, were killed. Priests in crisp white robes held funerals in a tent outside the badly damaged building. The services lasted all day.

On the same day, ISIS claimed responsibility for the bombings, and a government official suggested they were retaliation for the mosque attack in Christchurch, New Zealand. Here are some images as the country grapples with tragedy.

Tuesday