The speaker of Yemen's upper house of parliament has died of injuries from an assassination attempt on President Ali Abdullah Saleh in June.
Abdulaziz Abdulghani is the first senior politician to die as a result of the explosion at Mr Saleh's compound.
In a TV address last week, Mr Saleh said would return to Sanaa "soon" from Riyadh, where he and several aides are receiving medical treatment.
Yemen has been paralysed by months of protests against his 33-year rule.
Yemeni state television reported on Monday that Mr Abdulghani - a former prime minister and vice-president of North Yemen - had died in a Riyadh hospital, hailing him as "a great martyr of the country".
Meanwhile, Yemen's prime minister, Ali Mohammed Mujawar, was expected to fly home from Saudi Arabia, the Reuters news agency reported, which would make him the first of Mr Saleh's aides to return since the attack more than two months ago.
The impoverished country of 23 million people has been in turmoil since January, when protesters took to the streets demanding that Mr Saleh leave office.
Since then, hundreds have died in battles between security forces and protesters, while in the southern Abyan province, gunmen have seized control of several cities, including the provincial capital Zinjibar, Jaar, and Shaqra.
The international community has expressed fears that the power vacuum could play into the hands of al-Qaeda in the Arabian Peninsula (AQAP), the local branch of the network.