Nigeria’s National Security Adviser, Mallam Nuhu Ribadu, has announced the capture of two top leaders of Ansaru terrorist group by security forces.
Ribadu disclosed this at a press briefing at the Office of the National Security Adviser ONSA on Saturday in Abuja.
The NSA said “Today, I am glad to inform you that we have successfully concluded a high-risk, intelligence-led, counter-terrorism operation which led to the capture of the top leadership of Jama’atu Ansarul Muslimina fi-Biladis Sudan, commonly known as ANSARU, Nigeria’s Al-Qaeda affiliate.
“The group was first formed in January 2012 with a public declaration in Kano. It emerged as a splinter faction from Boko Haram, positioning itself as a “humane alternative.” However, its stated aim quickly turned to attacking Nigerian security operatives, civilian communities and government infrastructure. The group publicly displayed the setting sun logo of Al-Qaeda in the Islamic Maghreb (AQIM), signaling its ideological and operational alignment with global jihadist movements.
“Over the years, Ansaru entrenched itself in both urban sleeper cells and forest enclaves, across several cities in northern Nigeria and in forest based enclaves particularly around Kainji National Park, straddling Niger and Kwara States as well as Benin Republic.
Ribadu revealed that “The targeted operation, which was conducted between May and July 2025, led to the capture of 2 top ANSARU leaders who have been responsible for masterminding several terrorist attacks against Nigeria over the past years:
“The first is Mahmud Muhammad Usman (aka Abu Bara’a/Abbas/Mukhtar), the self-styled Emir of ANSARU. He is the coordinator of various terrorist sleeper cells across Nigeria. He is also the mastermind of several high-profile kidnappings and armed robberies used to finance terrorism over the years.
“The second is Mahmud al-Nigeri (aka Mallam Mamuda), Abu Bara’s proclaimed Chief of Staff and Deputy. He is the leader of the so-called “Mahmudawa” cell hiding out in and around the Kainji National Park, straddling Niger and Kwara States up to Benin Republic. Mamuda trained in Libya between 2013 and 2015 under foreign jihadist instructors from Egypt, Tunisia, and Algeria, specializing in weapons handling and IED fabrication.
“These 2 men have been on Nigeria’s most-wanted list for years. They jointly spearheaded multiple attacks on civilians, security forces, and critical infrastructure. Their operations include the 2022 Kuje prison break, the attack on the Niger uranium facility, the 2013 abduction of French engineer Francis Collomp in Katsina, and the May 1, 2019 kidnapping of Alhaji Musa Umar Uba (Magajin Garin Daura). They were also behind the abduction of the Emir of Wawa and they maintain active links with terrorist groups across the Maghreb, particularly in Mali, Niger and Burkina Faso.
“The 2 men, who are wanted internationally, are currently in custody.”
Read full text of Ribadu’s briefing below:
PRESS BRIEFING ON RECENT SUCCESSES RECORDED IN NIGERIA’S ONGOING COUNTER TERRORISM EFFORTS AGAINST ANSARU HELD AT ONSA ON 16 AUGUST 2025
PROTOCOLS
PREAMBLE
I am happy to welcome you all to this press briefing session. This briefing is organised to update you on the recent successes recorded by Nigeria in the ongoing efforts to decisively rid our country of terrorist groups. This press briefing is in line with our continuous resolve to keep the general public abreast with the efforts being undertaken by the Office of the National Security Adviser (ONSA) in conjunction with the Services, Intelligence Agencies and other key stakeholders.
SPECIFIC DETAILS OF THE APPREHENSION
b. The second is Mahmud al-Nigeri (aka Mallam Mamuda), Abu Bara’s proclaimed Chief of Staff and Deputy. He is the leader of the so-called “Mahmudawa” cell hiding out in and around the Kainji National Park, straddling Niger and Kwara States up to Benin Republic. Mamuda trained in Libya between 2013 and 2015 under foreign jihadist instructors from Egypt, Tunisia, and Algeria, specializing in weapons handling and IED fabrication.
c. These 2 men have been on Nigeria’s most-wanted list for years. They jointly spearheaded multiple attacks on civilians, security forces, and critical infrastructure. Their operations include the 2022 Kuje prison break, the attack on the Niger uranium facility, the 2013 abduction of French engineer Francis Collomp in Katsina, and the May 1, 2019 kidnapping of Alhaji Musa Umar Uba (Magajin Garin Daura). They were also behind the abduction of the Emir of Wawa and they maintain active links with terrorist groups across the Maghreb, particularly in Mali, Niger and Burkina Faso.
SIGNIFICANCE OF THE OPERATION
CLOSING NOTES