Liz Throssell, an OHCHR spokesperson, described numerous attacks, including on a private minibus, an airport and a camp for displaced people, saying that at least 59 people died in the camp strike, making it the most lethal one.

“At least 108 civilians have reportedly been killed and 75 others injured since the year began as a result of airstrikes allegedly carried out by the Ethiopian air force,” Throssell told Geneva-based journalists.

UN Secretary-General Antonio Guterres said later on Friday that he was “heartbroken by the suffering of the Ethiopian people”, appealing again for the parties to stop fighting.

“All people who need humanitarian aid must receive it as quickly as possible. It’s time to start dialogue and reconciliation,” he posted on Twitter.

Throssell called on Ethiopian authorities and their allies to ensure the protection of civilians in line with international law which requires verification that targets are military.

“Failure to respect the principles of distinction and proportionality could amount to war crimes,” she said.

Ethiopia’s military spokesperson Colonel Getnet Adane and government spokesperson Legesse Tulu did not immediately respond to a request for comment on the alleged strikes.

The government has previously denied targeting civilians in the 14-month-old conflict with rebellious Tigrayan forces. The Tigray People’s Liberation Front (TPLF) that is fighting the central government is not believed to have the airpower to carry out strikes.

A UN World Food Programme official warned at the same briefing that its operations in northern Ethiopia “are about to grind to a halt” because of intense fighting nearby.

“With no food, no fuel, no access, we are on the edge of a major humanitarian disaster,” said the WFP’s Thomson Phiri.