At least 65 people have been killed by a huge suicide blast near a government compound in the Somali capital, Mogadishu, say officials.
Eyewitnesses said a truck carrying explosives was driven into a gate near a government ministry and detonated.
A spokesman for the Islamist militant group al-Shabab told the BBC it had carried out the attack.
It is the largest attack since al-Shabab withdrew its forces from Mogadishu in August.
Rescue workers said more than 40 people had been injured in the blast.
