UPDATE 6-Sri Lanka clashes kill one; imposes nationwide curfew after mosques attacked

One person was killed in Sri Lanka on Monday as police fired tear gas at mobs attacking mosques and Muslim-owned shops and imposed a curfew after the worst outbreak of sectarian violence since the Easter bombings by Islamist militants. The April 21 attacks, claimed by Islamic State, targeted churches and hotels, mostly in Colombo, killing more than 250 people and fueling fears of a backlash against the island nation's minority Muslims. An officer at the Marawila hospital police said a 42-year old man admitted to the hospital with stab wounds had died.