Nigeria: Captured 'Ansaru Leaders' Make U-Turn, Plead Guilty to 32 Terrorism Charges

Guilty Plea and Sentencing

Two senior commanders of the Ansaru terrorist group have been sentenced to life imprisonment by the Federal High Court in Abuja after changing their pleas to guilty on all 32 charges brought against them.

The defendants, identified as Abubakar Abba (also known as Abu Bara'a and Malam Mamuda) and Mahmud Usman (also known as Abu Bara'a, Abbas and Mukhtar), appeared before Judge Emeka Nwite on Monday. The judge handed down the life sentences on counts 30 and 31, and imposed a further 20 years' imprisonment on each of the remaining counts, with the prison terms to run concurrently.

The State Security Service (SSS) had prosecuted the two men, who were described by the agency as the self-styled Emir of Ansaru and the group's deputy leader. The charges included terrorism, terrorism financing, kidnapping for ransom, illegal mining, and fabricating improvised explosive devices.

The defendants initially pleaded not guilty when first arraigned in September 2025. However, on Monday, their defence lawyer, Bala Dakum, told the court that after consultation, his clients had decided to abandon their earlier pleas and admit the charges.

"After consultation with the defendants, my lord, they have agreed and are ready to change their plea. We apply that the 32 charges be read again," Mr Dakum said. The State Security Service (SSS) lawyer, David Kasim, did not oppose the application, and the court granted the request.

Judge Emeka Nwite subsequently sentenced both men to life imprisonment on counts 30 and 31, with 20-year terms imposed on each of the remaining counts, to run from the date of their arrest.

Prosecution Case

The defendants were arrested in 2025 in an operation by Nigerian security forces. They were brought before the court on charges including terrorism, terrorism financing, kidnapping for ransom, illegal mining, and fabricating improvised explosive devices.

The prosecution, led by the State Security Service (SSS), also alleged that the defendants coordinated sleeper cells and maintained links with terrorist groups operating across the Sahel and Maghreb regions.

During the initial arraignment in September 2025, Mahmud Usman pleaded guilty to one count of illegal mining, while both defendants entered not-guilty pleas to the remaining charges. The trial subsequently opened with testimony from a prosecution witness identified as "Triple A."

At Monday's hearing, however, their lawyer, Bala Dakum, told the court that after consulting with the defendants, they had decided to abandon their earlier pleas and admit to all charges. "After consultation with the defendants, my lord, they have agreed and are ready to change their plea. We apply that the 32 charges be read again," Mr Dakum said. The State Security Service (SSS) prosecutor, David Kaso, did not oppose the application.

Judge Emeka Nwite accepted the guilty pleas and imposed life imprisonment on counts 30 and 31. He further sentenced both men to 20 years' imprisonment on each of the remaining counts, with the sentences to run from the date of their arrest.

Background and Charges

The two men were first arraigned in September 2025. At that time, Mr Usman pleaded guilty to a single count of illegal mining but pleaded not guilty to the remaining charges, while Mr Abba entered a not-guilty plea to all counts. The case stalled for months before Monday's change of plea.

The defendants faced 32 counts including terrorism, terrorism financing, kidnapping for ransom, illegal mining, fabricating improvised explosive devices, and related offences. Prosecutors from the SSS also alleged that the pair coordinated sleeper cells, orchestrated attacks, and maintained links with terrorist groups operating across the Sahel and Maghreb regions.

Mr Usman, also known as Abu Bara'a, Abbas and Mukhtar, was identified by the prosecution as the self-styled Emir of Ansaru. Mr Abba, also known as Mahmud al-Nigeri and Malam Mamuda, was described as the group's deputy leader and chief of staff. Security officials said the men were captured last year following operations targeting Ansaru's leadership.

During the trial, an SSS operative testified that the defendants confessed to maintaining ties with terrorist organisations across West Africa.

SSS Plans Appeal

The State Security Service has signalled that it intends to appeal the life sentences, arguing that they are inadequate given the gravity of the offences. The agency has pointed to the case of two teachers from Orire who were beheaded by the group as an illustration of the severity of the crimes committed.

The appeal filing comes against the backdrop of Nigeria's rare use of capital punishment. Although the country retains the death penalty for certain offences, executions are seldom carried out, meaning the life sentences may effectively constitute the final punishment in this case.