Yemeni security and medical officials say 35 fighters have been killed in clashes between Shia rebels and pro-government forces in Taiz, the country's third-largest city.
The officials say Shia rebels known as Houthis were trying to retake the western part of the city Saturday, while a Saudi-led coalition launched more than a dozen airstrikes to prevent the Houthis from advancing.
Yemen's civil war pits Houthi rebels against fighters allied with the internationally recognized government. A Saudi-led coalition began launching airstrikes against the Houthis in March 2015.
The Houthis had besieged Taiz for over a year until pro-government forces pushed them out of the western part of the city last week, reopening a passage into Taiz.
All officials spoke on condition of anonymity because they were not authorized to brief reporters.