The foiled bombings of the U.S. Embassy and other sites in the Ugandan capital were to have been more devastating than those in neighboring Kenya and Tanzania, a newspaper reported Saturday.

"Sudan wanted to retaliate for the U.S. missile strikes in August with devastating bomb explosions in Kampala. The explosions were to be carried out in the city last week," the government-owned New Vision newspaper quoted unidentified sources as saying."This was going to be worse than Nairobi. Terrorists planned to explode a 1-ton bomb (at the embassy), more powerful than the one used in Kenya," the newspaper quoted one source as saying.

Nearly simultaneous Aug. 7 blasts killed 248 people in Nairobi, Kenya, and 11 in Dar es Salaam, Tanzania. In retaliation, on Aug. 20, the United States carried out cruise-missile strikes on alleged terrorist camps in Afghanistan and on a factory in Sudan that allegedly manufactured chemicals used in terrorist attacks.

Police are holding 20 people in Kampala, including two men described by Ugandan security officials as masterminds of the Nairobi and Dar es Salaam bombings, in connection with the plan to blow up the U.S. mission in Kampala and other sites, which have not been identified.

New Vision said the group includes eight Ugandans and 10 Somalis. The newspaper said police have not identified the two leading suspects, although they are said to be neither Ugandan nor Somali.

The newspaper said police have seized a dump truck that was reportedly to have been used in the Ugandan bombing as well as explosives.