At least 30 people have been killed in an air strike on a market near the Yemeni capital, Sanaa, witnesses say.
Residents quoted by Reuters news agency said that at least 30 other people had been injured, most of them civilians.
It is not clear who carried out the strike. About 6,000 people have been killed since a Saudi-led coalition started attacking rebels last March.
The offensive aims to restore the government and drive back Houthi rebels loyal to ex-leader Ali Abdullah Saleh.
The strike hit the Nehm region north-east of Sanaa, where coalition-backed loyalists have been advancing as they try to reach rebel-controlled Sanaa, AFP news agency reported.
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The Saudi-led offensive supports the internationally-recognised government of President Abedrabbo Mansour Hadi, who has been based in the southern city of Aden since July.
Saudi Arabia says the Houthis are supported militarily by its regional rival Iran – something it denies.
In a leaked report last month, a UN panel of experts accused the Saudi-led coalition of targeting civilians with air strikes in a “widespread and systematic” manner.
The panel said civilians were also being deliberately starved as a war tactic.