"They were on their way to Libya as illegal immigrants," spokesman Sawarmi Khaled Saad told AFP.
"The smugglers left them in the desert... On the border between Sudan and Libya," he said, adding that all of the dead were Sudanese.
The others are from various nationalities and include Ethiopians, Eritreans, Pakistanis and Bangladeshis, Saad said.
Sudanese and Libyan troops rescued the migrants in a joint operation, the army spokesman said in a statement posted on the defence ministry's website.
"Nine of them died and the others are in a bad condition. They are getting treatment and being transferred to Dongola," a town about 500 kilometres northwest of Khartoum, he added.
The loosely governed desert region stretching from eastern Sudan up through Egypt to the Sinai Peninsula is a major route for African migrants trying to flee in search of a better life.
Thousands of Eritreans make the journey each year. Many head for Israel while others try to get to Europe.
"Some of them try to go through Egypt. Some of them try to go through Libya," said a source familiar with the situation.
More than 350 migrants, mainly from Eritrea, died in an October shipwreck off the Italian island of Lampedusa as they tried to reach Europe.
Economic migrants or refugees often rely on smugglers.
According to official data, some 600 refugees from authoritarian Eritrea alone make their way to neighbouring Sudan each month.
"The majority of them want to continue onwards," the source said.
A Human Rights Watch report in February accused Egyptian and Sudanese security officers of colluding with traffickers accused of holding Eritrean migrants for ransom and torturing them.
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
