PoliticsIslamic State claims responsibility for Sri Lanka attacks
Bombings are in retaliation for Christchurch massacre, defense official says
Mourners in Sri Lanka carry the coffin of a victim of Sunday's terror attacks during a mass burial Tuesday. © Reuters
YUJI KURONUMA, Nikkei staff writer
NEW DELHI -- The Islamic State on Tuesday claimed responsibility for the Easter Sunday terror attacks in Sri Lanka that have killed over 300 people, adding an international dimension to the massacre believed to be retaliation for attacks on New Zealand mosques.