Aircraft from a Saudi-led coalition bombed Yemen's Houthi outposts throughout the country on Sunday, residents said, while Yemen's government in exile said the militia was in talks with the United States in Oman, Reuters reported.
The raids hit an air base near Sanaa airport and a military installation aligned with the Houthis overlooking the presidential palace compound in the capital Sanaa.
The Saudi-led coalition began air strikes in Yemen in March in a campaign to restore Yemeni President Abd-Rabbu Mansour Hadi to power. He fled in March, after Iranian-backed Houthis seized Sanaa in September and then thrust into central and south Yemen.
Nearly 2,000 people have been killed and over 8,000 wounded in the conflict since March 19, according to the United Nations.
The Houthis' TV channel al-Masira said the coalition had launched 25 air strikes on the main Houthi provinces of Saada and Hajja along the kingdom's border, without giving details, and said Saudi ground forces were also shelling the areas.
Residents in Saada confirmed to Reuters by telephone that Houthi positions were heavily bombed by war planes, but there was no immediate confirmation by Saudi authorities.
In the central city of Taiz, also a main battleground between armed Hadi loyalists and Houthi militiamen, residents reported Arab air strikes on Houthi forces gathered in a historic mountaintop fortress and a nearby special forces base.