Sri Lanka Was Warned of Possible Attacks. Why Didn’t It Stop Them? The New York TimesSri Lanka bombings: doubts over Islamist group's potential role The GuardianCoordinated bombings in Sri Lanka rank high on list of deadly recent attacks The Washington PostSri Lanka Attacks Live Updates: Terrorist Group Is Identified, and Search Is on for Possible Allies The New York TimesSri Lanka attacks: Authorities face scrutiny over advance warnings BBC NewsView full coverage on Google News