DUBAI — Yemen's Huthi rebels made gains against government troops north and east of Sanaa on Monday, seizing a strategic road in deadly fighting, loyalist military officials said.

The pro-government sources said the rebels had captured the route that connects Sanaa to the provinces of Marib, to the east, and Jawf to the north.

Dozens have been killed or wounded in the fighting around Sanaa in the past 48 hours, according to these military sources, but they were not able to give precise figures.

"The Huthis are now seeking to take Hazm, the capital of Jawf province," one official said on condition of anonymity.

The rebels were now just five kilometres from the city, this source added.

Before the latest upsurge in fighting, Jawf province had been mostly controlled by the Huthis, with its capital still in the hands of the government.

Marib province is partly under Huthi control, with its capital also held by the government.

The renewed fighting, which erupted nearly two weeks ago, included a January 18 missile strike on a loyalist military camp that killed 116 people.

At the United Nations, the flare-up prompted Britain to request a Security Council meeting which will be held Tuesday some time after 1500 GMT, diplomats said.

The closed-door meeting could yield a joint statement, one of the diplomats said. The UN's envoy for Yemen, Martin Griffiths, is scheduled to give a report on the situation in Yemen via video link, the diplomat added.

The clashes have shattered a period of relative calm in a country devastated by five years of war.

On Monday a missile struck a popular market west of the city of Taiz in southwestern Yemen, killing three civilians and wounding seven others, according to the Saba news agency, which blamed the Huthis for the attack.

The war in Yemen pits the Iran-backed Huthis against the internationally recognised government which since 2015 has been reinforced by a military coalition led by Saudi Arabia and its allies, including the United Arab Emirates. 

On Friday, the government acknowledged the Huthis' progress, saying it had carried out a "tactical withdrawal" of its own troops from certain positions east of Sanaa, some of which it had held for three years. 

In a report published on Friday, the International Crisis Group said the Huthis "appeared to be making the biggest gains on the battlefield".

The think-tank warned that if the renewed fighting spread, it would represent "a devastating blow to current efforts to end the war". 

The conflict has left tens of thousands of people dead, mainly civilians, and triggered what the United Nations has said is the world's worst humanitarian crisis. — AFP