World Bulletin / News Desk
They said warplanes flew between 15 and 20 sorties against groups of Houthi fighters and arms depots in the al-Dhalea provincial capital, Dhalea, and the nearby city of Qa'ataba, between dawn and 0900 local time (0600 GMT), setting off a chain of explosions.
Dhalea residents said sounds of explosions could be heard for two hours after the strikes.
Saudi-led warplanes also struck the area around the presidential compound in Sanaa for a second day, while heavy street fighting was under way in the strategically important city of Taiz in central Yemen, according to residents and the International Committee of the Red Cross.
There were no immediate reports on the extent of casualties.
The Houthis also blocked a convoy of ICRC trucks carrying medical supplies to Aden, but contacts were underway to allow the supplies in.
"Our convoys were blocked from going to Aden and Marib over the weekend and we are in discussions with the Houthis to resolve that," ICRC spokeswoman Sitara Jabeen told Reuters.
On Sunday, air strikes, naval shelling and ground fighting shook Yemen in some of the most widespread combat since the operations began last month. Residents said there were at least five air strikes on military positions and an area near the presidential palace compound in the Houthi-held capital Sanaa.
Residents also said Saudi-led war planes pounded areas around the presidential compound in Sanaa for the second day, and launched at least five raids on areas under Houthi control in Marib and al-Jouf in northern Yemen.Güncelleme Tarihi: 27 Nisan 2015, 16:32