Witnesses say Somali insurgents attacked a government checkpoint in the capital, sparking a gunbattle that killed at least five people.
Somalia's radical Islamic group, al-Shabab, claimed responsibility for the attack early on Tuesday. Al-Shabab spokesman Ali Mohamud Rage says his group seized control of the checkpoint. Mogadishu resident Abdulle Ahmed says he saw five corpses.
Government officials could not be reached for comment. A surge of violence in Somalia's capital since last month has killed about 200 people as insurgents battle the government and its allies. Insurgents want to topple the Western-backed government and install a strict Islamic state.
Somalia has had no effective central government for nearly two decades.