The terror suspects, including one woman, appeared in a court in the Ugandan capital of Kampala, charged with belonging to a terrorist group as well as aiding terror activities. Nine of them are Somali nationals and one is Kenyan.
Prosecutors say the suspects belong to the al-Qaida-linked Somali militant group al-Shabab, which in 2010 claimed responsibility for bomb attacks that killed at least 76 people watching a soccer World Cup final on giant screens in Kampala.
Uganda, which has troops fighting al-Shabab in Somalia, has been on alert amid concerns al-Shabab is plotting an attack similar to the deadly assault on a mall in Kenya a year ago.
Uganda's security forces on September 13 raided at least two locations deep inside a Kampala slum, saying the operation was to bust an al-Shabab cell that plotted attacks in Kampala.
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Following the operation, the US Embassy in Uganda, which had urged US citizens to stay indoors while the operation unfolded, reported that a terror attack had been disrupted.
The African Union troops pushed al-Shabab out of the capital, Mogadishu, in 2011.
A similar offensive is under way to oust the militants from their remaining strongholds in southern Somalia, where a US airstrike killed al-Shabab's former spiritual leader earlier this month.