The attack
On January 15, 2019, attackers entered the DusitD2 hotel and surrounding office complex in Nairobi. Kenyan authorities mounted a lengthy security operation that ended the following day. Twenty-one people were killed in the attack, including Kenyan and foreign victims.
All five direct attackers were killed during the response. That meant later criminal proceedings focused on people accused of providing logistical, financial or documentary support rather than on the gunmen themselves.
The investigation
Investigators traced financial transfers, identity documents, travel and communications connected to the attackers. A Kenyan criminal case ultimately proceeded against several alleged facilitators under the Prevention of Terrorism Act.
One accused man, identified in court records as Mire Abdulahi Ali, entered a plea agreement and was convicted earlier in the proceedings. The case continued against Hussein Mohamed Abdille Ali and Mohamed Abdi Ali.
The 2025 convictions
In May 2025, a Nairobi court found Hussein Mohamed Abdille Ali and Mohamed Abdi Ali guilty of aiding the attack. The court concluded that the men had provided material support that included money and false identification documents used by members of the attacking group.
On June 19, 2025, both men were sentenced to 30 years in prison. Contemporary reporting stated that they retained a right to appeal. This page therefore records the convictions and sentences without claiming that every possible post-judgment challenge has necessarily been exhausted.
Why the roles must stay separate
The convicted facilitators were not the direct attackers who carried out the killings inside the complex. Their criminal responsibility was based on assistance, financing and conspiracy-related conduct established in court. This distinction matters because assigning the direct killings to every person associated with the wider network would overstate the judicial findings.
Current status
The case is classified Solved / Adjudicated for archive purposes. The direct attackers were identified and died during the security response, while several facilitators were later convicted. The 2025 judgment substantially completed the long-running Kenyan prosecution against the two remaining defendants in that case, although ordinary appellate rights were still available after sentencing.
Timeline
January 15–16, 2019: the DusitD2 complex is attacked; 21 people are killed and the direct attackers die during the security response.
2019–2024: Kenyan investigators and prosecutors pursue alleged facilitators through a long terrorism-related prosecution.
January 21, 2025: Kenya Law records the continuing trial against Hussein Mohamed Abdille Ali and Mohamed Abdi Ali, with a third accused having already resolved his case by plea agreement.
May 22, 2025: the two remaining defendants are found guilty of aiding the attack.
June 19, 2025: both are sentenced to 30 years in prison.
August 27, 2026 review: no later judgment overturning those convictions was identified in the sources reviewed for this page.