Sri Lanka widened a curfew on Monday after attacks on mosques and Muslim-owned businesses in the worst unrest since Easter bombings by Islamist militants and blocked Facebook and WhatsApp to stop people inciting violence.
The island nation has ramped up security as fears grow that minority Muslims among its population of 22 million could face sectarian violence after Islamist bombers blew themselves up in four hotels and three churches, killing more than 250 people.