UNITED NATIONS — A U.N. humanitarian official warned Thursday of an ongoing crisis in Ethiopia’s conflict-torn Tigray region, pointing to targeted civilian killings, over 500 recent rape cases, an increasing number of people fleeing violence, 4.5 million people needing food, and children on the brink of starvation. Wafaa Said, the deputy humanitarian coordinator for Ethiopia who spent 2 1/2 months in Tigray, said in a virtual briefing to U.N. members that the impact of the crisis isn’t fully known because of communications blackouts in large parts of the region and lack of access to vast areas, especially rural areas. “Yet what is already known is quite alarming,” he said. The U.N.’s humanitarian partners continue to receive corroborated reports of targeted civilian killings, sexual and gender-based violence, forced displacement, restricted movements of civilians and extensive looting of civilian property, Said noted. No one knows how many thousands of civilians or comb...