A Somali police official says a suicide car bomber has targeted an army convoy near parliament headquarters in Somalia's capital.

Capt. Mohamed Hussein says the bomber struck troops travelling along Sayidka junction Saturday evening, sending plumes of smoke into the sky.

There is no immediate word of any casualties.

The local al-Shabab extremist group has claimed responsibility for the blast, saying on its Andalus radio that one of its fighters targeted a convoy of intelligence forces.

The al-Qaida-linked al-Shabab has carried out several such attacks in Mogadishu this year as it continues a deadly guerrilla war across large parts of Somalia.