(AP)- Somali security forces have shot dead three extremists and foiled an attempted al-Shabab attack on the presidential palace in the capital, a police officer says.
Six people were dead in all including a suicide car bomber, Captain Mohamed Hussein told The Associated Press, saying the situation had calmed and security in the area was being tightened after Saturday's attack.
The midday attack began when a car bomb detonated near a checkpoint close to the presidential palace after security forces engaged with gunmen. A second car bomb exploded in the same area shortly afterward, Hussein said.
The attack came a week after a similar one on the interior ministry compound in Mogadishu killed at least nine people.
The Somalia-based al-Shabab extremist group, an arm of al-Qaeda, often targets high-profile places in the capital. It claimed responsibility for Saturday's attack, saying its fighters were conducting a "major operation" around the palace and nearby SYL Hotel.
Al-Shabab was blamed for the October truck bombing in Mogadishu that killed more than 500 people in the deadliest attack in the country's history.
The threat from what has become the deadliest Islamic extremist group in sub-Saharan Africa has hurt efforts to strengthen Somalia's fragile government and stabilise the long-chaotic Horn of Africa nation.
The United States under the Trump administration has stepped up military efforts in Somalia, including dozens of drone strikes, against al-Shabab and a small presence of fighters linked to the Islamic State group. At least two US military personnel have been killed.