The militant Islamist group al-Shabab says its fighters took control of the base but this is not confirmed.Al-Shabab is battling Somalia's government for control of the country.
The base is manned by Burundian soldiers from the African Union Mission in Somalia (Amisom), which has more than 20,000 troops in the country.
Leego residents have seen militants burning vehicles, carrying off weapons and removing the bodies of their fighters killed in the attack.
bbc
