Iran-backed rebels convened Yemen's parliament on Saturday in defiance of the internationally recognised government, prompting condemnation from President Abedrabbo Mansour Hadi.
Shia Houthi rebels in Yemen announced on Sunday the release of 276 government loyalists who had been held captive for months, in a gesture of good will.
An air strike by the Saudi-led coalition fighting opponents of President Abedrabbo Mansour Hadi killed six civilians from the same family by mistake on Wednesday, a provincial official said.
Yemen's President Abedrabbo Mansour Hadi has relieved prime minister and vice president Khaled Bahah of his duties in government, a presidency source told AFP on Sunday.
The Saudi-led coalition bombing Yemen for one year has caused the vast majority of civilian deaths in the conflict, the UN rights chief said Friday, warning international crimes may have been committed.
Authorities in Yemen's southern city of Aden imposed a curfew on Monday after violence blamed on suspected jihadists killed at least 22 people, pro-government media and security sources said.