Analysts in Uganda say an army general's concern that officials are at risk of assassination if they oppose President Yoweri Museveni's plan to have his son succeed him is controversial because it challenges the president's reputation as a moderate leader.

Police raided a Kampala newspaper Monday to search for evidence against Gen. David Sejusa, who urged an investigation into reports that officials could be assassinated for opposing the rise of Museveni's son.

Museveni is praised by many for rescuing Uganda from the rule of dictators and restoring the rule of law. But Charles Rwomushana, a former intelligence official under Museveni, said Sejusa's letter undermines Museveni's popular image.

Nicholas Opiyo, a prominent lawyer, said Sejusa has forced a succession debate Museveni didn't want.