The attack, which also wounded another 14 soldiers, targeted an army convoy as it entered jihadist stronghold Zinjibar, capital of Abyan province, said the sources, blaming Al-Qaeda for the bombing.
Forces loyal to President Abedrabbo Mansour Hadi launched the Zinjibar offensive yesterday, after similar assaults pushed the jihadists from other areas in the south.
The Saudi-led coalition that has been battling Iran-backed rebels across the country since March 2015 has deployed Apache helicopters to support the loyalist fighting on ground.
"The withdrawal was decided following information that Al-Qaeda was preparing other car-bomb attacks against our troops," added the officer who requested anonymity.
Government forces also launched an offensive Saturday to drive the jihadists out of the neighbouring town of Jaar.
Fighting there killed 25 Al-Qaeda fighters and four soldiers as loyalists seized Al-Kud, five kilometres south of Zinjibar, military and medical sources said.
"After our withdrawal, Apache helicopters will target Al-Qaeda positions to secure the town," said another officer, adding helicopters had foiled two attempts to carry out bombings against troops using vehicles in Al-Kud.
Residents reported hearing heavy explosions as coalition jets struck Al-Qaeda-held arms depots in the city.
"The air raids are in preparation for a ground operation as part of a major military offensive to chase Al-Qaeda out of Mukalla and the entire Hadramawt province," an officer said.
Coalition-backed forces have driven militants out of Aden, the southern city declared by Hadi as the country's temporary capital after the Shiite Huthi rebels overran Sanaa in September 2014.
The latest fighting comes as representatives of the government and the Iran-backed rebels continue with UN-sponsored peace talks in Kuwait, which began on Thursday.
The negotiations are under pressure to firm up a fragile ceasefire in their conflict that went into effect on April 11, and from which the jihadists are excluded.
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
