The Court of Cassation announced its verdict in the presence of 12 of the accused, the source said, adding that the remaining two had been tried in absentia.
A court convicted the defendants of beating the victim to death "for terrorist purposes", the source said, citing the charge sheet.
A semi-military court established under a state of emergency in 2011 had originally sentenced the men to life in prison.
Lawyers for the defendants said their clients were "tortured" while in custody in 2011, and no action has been taken in response to their complaints.
Scores of Shiites have been jailed over accusations of involvement in violence since protests against the ruling Sunni Al-Khalifa dynasty erupted in February 2011.
Despite a heavy-handed crackdown by security forces in mid-March 2011, supported by Saudi-led Gulf troops, protesters quickly returned to the streets, mainly in Shiite villages, where they frequently clash with police.
At least 80 people have been killed in Bahrain since February 2011, according to the International Federation for Human Rights.
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
