MOGADISHU, March 29 (Xinhua) -- A heavy fighting broke out in the Somali capital of Mogadishu between clan insurgents and Ethiopian troops on Thursday, residents said.

    Ahmed Yusuf, a taxi driver told Xinhua four people were killed and seven others wounded when a shell hit a garage in Gubta neighborhood in Mogadishu.

    "The shell came out of nowhere and landed in the garage," Yusuf said.

    The sound of heavy artillery and machine gunfire could be heard throughout the city. More people have begun to flee the battle areas and seeking refuge in other locations of the capital. Public transport in some Mogadishu neighborhoods stopped.

    The fighting came only a week after a ceasefire signed between Hawiye clan elders and Ethiopian military officers led to relative calm in Mogadishu.