Bomb targets Qatari delegation in Somalia

(CNN) -- A suicide car bomb targeted an African Union convoy carrying a Qatari delegation in Somalia on Sunday morning, authorities said.

All members of the convoy were unharmed during the attack in the capital of Mogadishu, said Ahmed Adan, the Somali prime minister's spokesman.

Adan had said earlier that the interior minister was with the delegation, but the minister's office said he was not.

Radical Islamist militia Al-Shabaab is to blame for the attack, according to Adan.

Separately, the African Union command in Mogadishu said at least seven civilians were killed in the attack.

Al-Shabaab has waged recent attacks in the nation.

Last month, at least 10 heavily armed militants forced their way into a court building in Mogadishu, a deadly attack that left 29 people dead, diplomatic sources said.

In that attack, some assailants detonated explosives while others exchanged fire with government security, witnesses said.

At least nine members of Al-Shabaab were also killed, the sources said.

Somali President Hassan Sheikh Mohamud has called the uptick in strikes "nothing but a sign of desperation by the terrorists," saying the militants "are in complete decline."

Somalia's shaky transitional government, backed by African Union peacekeepers, has been battling Islamist guerrillas for years.