The Islamist militant group al-Shabab says it carried out a deadly attack in the Somali capital Mogadishu on Wednesday.
The African Union mission in Somalia says the bombing outside a government compound killed at least three people.
An A.U. mission spokesman says the blast occurred outside a building used by the parliament speaker, Sharif Hassan Sheikh Aden. It was not immediately clear if he was the target.
The United Nations-backed government pushed al-Shabab out of Mogadishu last year, but the al-Qaida-allied group has vowed to continue the attacks.
Al-Shabab continues to control parts of southern and central Somalia.
Somalia has not had a stable central government since 1991.
The country is also recovering from a severe drought and famine that displaced hundreds of thousands of Somalis.