He died of cardiac arrest in the early hours of the morning, the government said in a brief statement.
His personal security chief Alfredo Malu had told AFP the former president fell ill last night.
Yala's personal physician and nephew Martinho Kope Na Nhanca said he could do nothing to save him. The ex-president died at 2:00am.
Yala's sudden illness prevented him from meeting with candidates in his Party for Social Renewal (PRS) who are campaigning ahead of presidential and parliamentary elections due on April 13.
Groups of mourners and supporters gathered today in front of the heavily-guarded Bra hospital where his body was taken.
"He was a brave man who carried Guinea-Bissau in his heart," government spokesman Fernando Vaz said, announcing a three-day period of mourning starting tomorrow.
Born on March 15, 1953 to a family of peasant farmers in Pkon, a village near the northwestern town of Bula, Yala belonged to the Balanta ethnic group, the largest in the country, and passed some of his education in Portugal, the former colonial power.
When he turned to politics, he gained a reputation as a determined character who at first won the hearts of many of the people of Guinea-Bissau, which was born of a rebellion against the Portuguese and has since endured civil war.
Yala often sported a scraggly puff of chin hair and the red woollen hat, which Balante men are entitled to wear when they pass the highest Fanado initiation rite.
He was elected civilian president in 2000 in a country where the all-powerful army pulls many strings and which has in recent years become a hub for drugs trafficking between South America and Europe.
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
