The UN envoy to Yemen Ismail Ould Cheikh is holding talks with the government and the Houthi group for a pause of fighting during which emergency aid will be delivered to the war-affected people.
UN reports said Cheikh is holding talks with the government which has been staying in Saudi Arabia over the issue.
On the other hand, spokesperson for the Houthi group, Mohammed Abdul Salam, said they are in talks with Cheikh over a ceasefire during the remaining days of the fasting month of Ramadan.
Meantime, there are no reports when the ceasefire will start.
A fragile five-day ceasefire occurred in May but aid did not reach many people due to violence.
The humanitarian situation has alarmingly deteriorated during the months-long violence.
International organisations have lately warned of an imminent famine amid the persistent violence and a blockade on all Yemeni sea, land and air ports.
Around 80% of the total population have now become in need of emergency aid, according to the government.
More than 9 million need emergency healthcare help, organisations said.
The blockade was part of a Saudi-led military operation which was launched against the Houthi militants in late March.
It has left the country to face severe shortages of supplies especially foodstuffs, fuels and medicines.