The link between local militants and the Islamic State is unclear. But the Sri Lanka attacks showed the enduring ability of ISIS to inspire violence.
Sri Lankan police wrongly identified Brown University student Amara Majeed as a suspect in the Sri Lanka church bombings.
The Islamic State claimed responsibility for the attacks Tuesday, while Sri Lankan authorities said that Islamist extremists had carried out the attacks in retaliation for a white supremacist's attacks on two mosques in Christchurch, New Zealand, on March 15, that left 50 Muslims dead.
Sri Lankan officials failed to heed warnings from intelligence agencies about the threat of an attack by a domestic radical Muslim group that officials blame for Easter Sunday bombings which killed more than 200 people, the country's health minister said Monday.