Human Rights Watch condemned as an "apparent war crime" on Tuesday a Saudi-led air raid in Yemen last week that it said killed at least 65 civilians in residential compounds.
The New York-based watchdog charged that the Saudi-led coalition had failed to investigate alleged breaches of the rules of war during the bombing campaign it launched in Yemen and called for a UN probe, France24 reported.
It said at least 10 children were among the dead in Friday's strikes in the Red Sea port of Mokha.
Coalition warplanes repeatedly struck two compounds housing the families of workers at the Mokha Steam Power Plant, it added.
"With no evident military target, this attack appears to be a war crime," said the watchdog's senior emergencies researcher, Ole Solvang.
"The failure of Saudi Arabia and other coalition members to investigate unlawful airstrikes in Yemen demonstrates the need for the United Nations Human Rights Council to create a commission of inquiry," it said.
The UN says the conflict has killed more than 3,640 people, around half of them civilians, since late March.
On Monday, the coalition unilaterally began a five-day pause in its bombing campaign to allow delivery of desperately needed relief supplies.
But the International Committee of the Red Cross has warned that five days are not enough to cover the needs.
The Saudi-led coalition began its campaign on March 26 to restore Yemen's fugitive president Abd-Rabbuh Mansour Hadi to power and repel the Houthis who took control of the Capital Sana'a in September.
