Ugandan police made arrests in the days following the attack.
The Ugandan police said they had looked again in the latrine, where six corpses were found in March, but it was empty.
These steps included orders to the Ugandan police and army to shoot smugglers on sight.
In July 2007, Yeboah came under international scrutiny after Ugandan police confiscated a small electric shock toy in his possession.
At his death, Akii-Bua was a senior superintendent with the Ugandan police.
He that Interpol and the FBI were helping Ugandan police identify the two suspected bombers.
Ugandan police believe that some members, who were required to sell their possessions and turn over the money to the Movement, rebelled and demanded the return of their money.
The Ugandan police, understaffed and underequipped, are leaning to the latter theory, particularly since they unearthed 159 more bodies last week.
"It was a place for indoctrination," Terense Kinyera, the regional head of criminal investigations for the Ugandan police, said after meeting with other investigators here.
Ugandan police arrested Peter Waldron, an evangelist, along with six other suspects on charges of "terrorism" on 20 February 2006.