Residents in central Somalia say heavy fighting has erupted between rival clans, killing at least 28 people.

Witnesses say the fighting occurred early Thursday in the central Somali town of Gelinsor, near the Ethiopian border.  They say the fighters used anti-tank weapons, anti-aircraft guns and heavy machine guns mounted on pick-up trucks.

It was not immediately clear what sparked the fighting.

The violence comes a day after Somali Prime Minister Ali Mohammed Gedi named 27 ministers to his new cabinet to fill a void 13 years after the collapse of the nation's former central government.

Some information for this report provided by AFP, Reuters.