Sri Lanka's president gave the military a wider berth to detain and arrest suspects — powers that were used during the 26-year civil war but withdrawn when it ended in 2009.
Police spokesman Ruwan Gunasekara said the death toll from Sunday's attacks rose to 310.
President Maithripala Sirisena has declared a day of mourning for Tuesday, a day after officials disclosed that warnings had been received weeks ago of the possibility of an attack by the radical Muslim group blamed for the bloodshed.
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