A Kenyan court has charged four Somali men with terrorist offences for helping al-Qaeda-linked militants carry out an attack on a shopping centre in Nairobi that killed 67 people.
Few details have emerged so far about the how the September attack was masterminded or how gunmen held off Kenyan security forces for four days in the Westgate centre.
The assault was claimed by the Somali Islamist group al-Shabaab.
US, British, Israeli and other experts joined Kenyan investigators at the site of the attack, which struck at the heart of east Africa's biggest economy.
The West sees Kenya as vital to the regional fight against militant Islam.
All the men who appeared in court today were formally charged with "commission of a terrorist act" under Kenya's anti-terrorism laws.
Other accusations ranged from providing support and shelter to the gunmen to using false documents.
The suspects all pleaded not guilty at the hearing.
The men were named as Mohamed Ahmed Abdi, Liban Abdullah Omar and Hussein Hassan.
A fourth suspect was identified as Adan Mohamed Ibrahim, although he was listed as using other aliases.