Brahimi was the second of two opposition politicians to have been assassinated last year by suspected jihadists as Islamist violence rocked the North African country, which was the birthplace of the Arab Spring revolutions in 2011.
The security forces "surrounded a house (near the capital Tunis) where a terrorist group had holed up. Following a sustained exchange of fire, four elements were arrested," interior ministry spokesperson Mohamed Ali Aroui told AFP.
"Among them is Hmed el-Melki, alias 'Somali,' one of the elements implicated in the assassination of the martyr Mohamed Brahmi," he said.
The announcement came after the government said Tuesday that the suspected Islamist assassin of Chokri Belaid -- the first of the murdered opposition politicians -- had been killed in a police raid.
Gunmen killed Belaid on February 6 and Brahmi on July 25, both of them outside their homes.
Authorities blamed the murders on the Ansar Al-Sharia, a jihadist outfit accused of links to Al-Qaeda, but the group never claimed responsibility for those or any other attacks.
Belaid was a charismatic leftist politician and virulent critic of the Islamist party Ennahda then in power. His murder triggered massive anti-government protests and a crisis from which Tunisia has only recently started to emerge.
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
