A suspected Saudi-led air strike killed at least 13 people at a wedding in a rebel-held town in Yemen, witnesses and the rebels said Thursday, even as UN peace efforts made headway.

The Saudi-led coalition, under mounting criticism over the civilian death toll of its bombing campaign against the rebels since March, denied any involvement in the latest attack.

It was the second alleged coalition air strike on a Yemeni wedding party in just over a week.

The new raid hit a house where dozens of people were celebrating the wedding on Wednesday evening in the town of Sanban, 100 kilometres (60 miles) south of the capital Sanaa, residents said.

"Coalition warplanes launched the attack. The house was completely destroyed," said witness and local resident Taha al-Zuba.

"Warplanes were heard in the area ahead of the attack."

The rebels' Almasirah television said on Twitter that the wedding was hit by "aggression warplanes", referring to the coalition.

Medical sources said another 38 people were wounded.

Coalition spokesman Brigadier General Ahmed al-Assiri said the allies did not launch any air strikes in Dhamar.

"We did not conduct any operation in Dhamar... No strikes there, definitely," he told AFP.

In September a suspected coalition strike killed at least 131 civilians at a wedding near the Red Sea city of Mokha, which the UN said may have been the deadliest single attack since March.

The coalition again denied involvement.

The latest strike came as the United Nations announced that the rebels, who control the capital and much of central and northern Yemen, had accepted a UN Security Council resolution calling for an end to the seven-month conflict.

The rebels' refusal to agree to abide by Resolution 2216 passed in April -- demanding their withdrawal from all the territory they have seized since they overran the capital in September 2013 -- had stymied previous peace efforts.

President Abedrabbo Mansour Hadi, who fled into exile in neighbouring Saudi Arabia in March but whose forces have since recaptured much of the south with the support of Saudi-led ground troops, had refused to join UN-brokered peace talks until the rebels signed up.

By AFP