The spokesman for Yemen's exiled government says it has informed the United Nations that a truce to halt more than three months of fighting would hold if guarantees are in place to ensure Shiite rebels withdraw from major cities and release prisoners — demands the rebels have rejected.

Rebel leader Zeifullah al-Shami told The Associated Press late Wednesday those conditions are "unacceptable" because they don't address the country's humanitarian crisis.

Despite the disagreements, al-Shami says the U.N.-sponsored talks that began Sunday are continuing in the capital, Sanaa.

Government spokesman Rajeh Badi says any truce should be observed by the U.N.

More than 3,000 people have been killed since March, when a Saudi-led and U.S.-backed coalition began launching airstrikes against the rebels and their allies.