The Nepalese government and Maoist rebels have delayed signing a peace deal to end the 10-year insurgency.
The announcement of the deal last week led to widespread celebrations
Both sides said they needed more time to finalise the document. Neither gave details about the causes of the delay, but both said that they were not major.
The agreement will see the rebels join a transitional government, while their arms will be put under UN supervision.
Both sides say that they will continue to work on the final draft, which they now hope to sign on 21 November.
"We have agreed to extend the deadline as there are some minor issues which need to be addressed properly," government negotiating team member Pradeep Gyawali said on Thursday.
Prachanda says he supports politics, not violence
The BBC's Surendra Phuyal in Kathmandu says that the failure to sign the treaty comes after two days of marathon negotiations.
Each side has said that it needs more time to finalise the permanent ceasefire agreement, and a related agreement on human rights laws.
Our correspondent says that it is now expected that the historic treaty will be signed on the same day as the government and Maoists announce an interim constitution.
That will pave the way for an interim government, which will have representation from the Maoists.
The two sides also say that they have made progress in confining rebel combatants in several UN-monitored cantonments around the country.
Rebel negotiator Dev Gurung said that there were no "major problems" in relation to the agreement.
The rebels say that that their leader, Prachanda, will fly to Delhi from Kathmandu on Friday to attend a media conference.
It will be the first appearance on the world stage for the reclusive rebel head.
'Longing for peace'
The deal will see the Maoists join an interim government within a month.
Rebel arms had been a sticking point in the talks
Prachanda has said the Maoists will use politics, not violence, to "meet the aspirations of the people's longing for peace".
Over 13,000 people have died in the decade-long insurgency in the country.
The Maoists entered into negotiations with the government after a popular uprising in April forced King Gyanendra to end his direct rule and appoint a multi-party government.