Columns of smoke rose over an arms depot targeted by warplanes east of the capital Sanaa, witnesses said.
The facility belonged to the elite Republican Guard, which remains loyal to former president Ali Abdullah Saleh.
Renegade troops loyal to Saleh are allied with the Huthi rebels, whose sweeping advance forced President Abedrabbo Mansour Hadi to flee to Riyadh last month.
Following heavy overnight air strikes in the north, coalition aircraft also hit the presidential palace in the southern city of Taez, the witnesses said.
Speaking in Riyadh, he added that there had been 100 sorties in Yemen on Thursday, indicating there is no end in sight to the operation.
"This works needs patience, persistence and precision. We are not in a hurry... We have the time and we have the capabilities."
Air strikes on the southern port city of Aden killed a rebel, while at least 76 other people died in bombing and fighting around Aden and Taez, officials said.
The United Nations says hundreds of people have died and thousands of families fled their homes in the war, which has also killed six Saudi security personnel in border skirmishes.
His remarks followed the resignation of envoy Jamal Benomar, saying he wanted to move on to a new assignment, but diplomats confirmed that he had lost the support of Yemen's exiled president and Gulf countries.
Saudi Arabia and its neighbours accuse Benomar of being duped by the Shiite Huthis who took part in peace negotiations as they pushed their offensive.
The Moroccan diplomat had been instrumental in negotiating a deal that eased Saleh from office in February 2012 after a year of protests against his three-decade rule.
The plan calls for a ceasefire and immediate end to all foreign military attacks, the urgent delivery of humanitarian and medical aid, a resumption of political talks and the formation of a national unity government.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
