John Nagenda, a senior media adviser to the Ugandan president, traveled through Europe recently raising questions about her.
The Ugandan president started an official visit to Austria last Wednesday.
Milton Obote, 80, former Ugandan president.
After being missing for more than 24 hours, the Ugandan president reported it to the Sudanese government which contacted SPLM for more information.
Yoweri Museveni, the Ugandan president, claims that the possibility of "external factors" having played a role could not be eliminated.
He was incarcerated multiple times and was last seen with the Ugandan president Idi Amin in 1971 and vanished afterwards.
Lt Col. Muhoozi Kainerugaba son of Ugandan president, 2007-2008.
John Nagenda, an aide to the Ugandan president, Yoweri Museveni, called the allegation "absolute rubbish."
Idi Amin (Ugandan president)
Hope Kivengere, a spokeswoman for the Ugandan president, said, "Our differences with Rwanda are really not fundamental."