Gunmen have killed six people in a drive-by shooting, including two Turkish hospital workers, in the latest violence to hit Somalia’s capital Mogadishu.

Gunmen have killed six people in a drive-by shooting, including two Turkish hospital workers, in the latest violence to hit Somalia's capital Mogadishu, authorities said Thursday.

"Six civilians, two of them Turkish nationals, have been killed, and six more were wounded," said Abdifatah Omar Halane, spokesman for the Mogadishu city authorities. The shooting took place late Wednesday, and those killed also included the driver and security guards of the Turks.

"Security forces are pursuing the attackers," Halane said.

Somalia's Prime Minister Omar Abdirashid Sharmarke condemned the attack as no group has so far claimed responsibility.

In a separate incident on Wednesday, witnesses said four people were killed, including three civilians caught in the crossfire, during a shootout between members of rival units within the Somali army.

Somalia's Al-Qaeda-affiliated Shebab militants - who are fighting to overthrow the country's internationally-backed government - carry out regular attacks in Mogadishu but the seaside capital is anarchic and is still awash with weapons after decades of war.