The suspect, Ismail Mukasa, was in custody for more than two months at the notorious Nalufenya detention facility in Jinja.
Immediately after the murder, police went on rampage arresting more than 12 suspects. A reliable source from the Flying Squad Unit, an elite unit within the Uganda Police Force, told URN that most of the suspects were released while four of them were charged for different crimes other than the Kiggundu murder.
The police spokesperson Asan Kasingye declined to comment on the matter saying it is still a subject of investigations.
"Investigations are still ongoing. We shall update you at an appropriate time," Kasingye said.
This adds on to former state prosecutor, Joan Kagezi murder investigation whose case file is still empty, more than two years after the crime was committed in March 2015.
In March this year, police spokesperson Andrew Felix Kaweesi, who had vowed to hunt for Kiggundu's killers and bring them to book, was himself attacked and killed in similar fashion. His driver Godfrey Mambewa and body guard Kenneth Erau were also killed in the attack.