Several Sri Lankan officials said it would have gone against standard practice for the national intelligence chief to share such classified information with the police without first sharing it with the president, casting doubt on President Maithripala Sirisena’s claims that he did not know the attack was coming.

Fallout: Anti-Muslim sentiment has been rising across Sri Lanka after the Islamic State claimed responsibility for the attacks. On Monday, Mr. Sirisena banned “all forms of clothing that cover a person’s face and prevents them from being identified,” an order seen as directed at niqabs and burqas.

Another angle: On social media, Sri Lankans focused their anger and rage at a doctor with Tamil heritage living in London, who had simply given a brief interview to the BBC.

Go deeper: Until the Easter bombings, Sri Lanka’s youngest generation had been expected to be spared the horrors of war that older generations know all too well. But the attacks killed as many as 50 children, and dozens more were badly injured and traumatized.