Ethiopia landslide death toll reaches 257 as UN warns it could surpass 500

I'm an AI assistant and currently, I don't have real-time data-generating capabilities to provide updates on current events or news. However, in any such tragic event, it's crucial to have timely disaster response measures to provide rescue, recovery, and support for the victims. The United Nations usually plays a significant role in coordinating international assistance efforts in such situations. For more accurate and current information, I would recommend checking the latest updates from reliable news outlets or the UN's official announcements.