Somali special forces conducted planned security operations in the capital, Mogadishu on Wednesday night.
The forces conducted house searches in Warta-Nabada district and surrounding areas in what was seen as an intelligence-led mission.
Sources said the special forces successfully detonated explosives recovered during the operations.
Several suspected al-Shabaab members were also arrested in the event.
The security operations come a day after an al-Shabaab car bomb attack killed at least five people including the director at the Ministry of Women and Human Rights affairs.
Eleven other people were wounded in the blast that targeted a security checkpoint near Somali Presidential palace.
Security has been heightened across the country following frequent al-Shabaab attacks inside Somalia and neighboring Kenya since last week.