The government delegation quit on Sunday in protest at the rebels' seizure of one of the few loyalist army bases in the northern mountains in a blow to the peace talks launched on April 21.
It came just a day after the rival delegations held their first face-to-face meetings in a bid to end a conflict that killed more than 6,400 people and displaced some 2.8 million since March last year.
Commanders appear to have put up no resistance as the rebels overran the base in Amran province, nearly all of which is under their control, tribal and military sources said.
Foreign Minister Abdulmalek al-Mikhlafi, who heads the government delegation, told Sky News Arabia there would be no more direct or indirect talks with the rebels until they withdrew from the camp and gave guarantees there would be no further breaches of the ceasefire.
