索马里发生自杀炸弹袭击数人丧生

Several people are dead after a suicide bomber blew himself up inside the main police training facility in Somalia's capital, Mogadishu, Thursday.

The attack happened as police were rehearsing a parade at General Kahiye Police Academy. Officials say the attacker entered the facility disguised as a policeman.

Reuters news agency says 13 people were killed in the bombing, but officials have yet to give an exact number of casualties. It says the militant Islamist group al-Shabab has claimed responsibility for Thursday's attack.

Al-Shabab controlled Mogadishu until 2011, when it was driven out by African Union peacekeepers and Somali security forces. The group has been active in Somalia trying to overthrow the government and install a strict form of Islam. It has deployed bomb attacks against government, military and civilian targets.