In 1805, in a tavern of Tripoli, Ahkbar and Edmund met with Jan van der Graff to give the Napoleon's agent intel about the secret entrances of the Sultan's palace so he could steal the big diamond in possession of the Sultan. Later, as van der Graff and his ally Solomon Bolden entered the tunnel mentionned by their contacts, they were ambushed by several men waiting for them. During the brawl, Ahkbar, who revealed himself to be an agent of the Sultan, stabbed Bolden in the back.
Van der Graff was captured and his interrogation was supervised by Ahkbar, who certified to the Sultan that the Flemish wasn't a Templar like Bolden and knew nothing of the true power of the Koh-i-Noor. Doubtful, the Sultan decided to keep Jan alive and had him thrown into the cell of Tavis Olier, who then trained the younger man in the Templar ways.
In July 1808, Olier heard that the Assassins were coming to buy the artifact in possession of the Sultan. In order to escape, the two Templars assaulted the guards bringing them food but Olier had to sacrifice himself to allow van der Graff to accomplish their mission.
After dispatching several guards, the Templar finally reached Selim's apartment where he discovered that Ahkbar, who was an Assassin, had already poisoned the monarch and had taken possession of his prize, the fabled Koh-i-Noor. After revealing that he intended to betray the Brotherhood and keep the artifact for himself, Ahkbar tried to use the Koh-i-Noor and its power to create illusions, but Graff saw through it, focusing on Ahkbar's footsteps to find the real one, and plunged his sword through his chest.