The United Nations’ new humanitarian chief has denounced “dangerous” accusations by Ethiopian government officials that aid workers were biased in favour of rebels in Tigray, where a brutal conflict between federal troops and forces loyal to the northern region’s rulers erupted nine months ago. Speaking to reporters at the end of a six-day visit to Ethiopia, Martin Griffiths also called for access to allow desperately needed aid into the mountainous region where the UN says hundreds of thousands of people are suffering from famine. “Blanket accusations of humanitarian aid workers need to stop,” he said. “They are unfair, they are unconstructive, they need to be backed up by evidence if there is any and, frankly, it’s dangerous.”