This assassination attempt occurred in 24 BBY when the Blackwater Systems corporation sent assassin droids to kill the Falleen Mazara, leader of a rebel group when she attempted to lead her group into their factory. The attempt failed when Jedi Knights Obi-Wan Kenobi and Siri Tachi, and their apprentices Anakin Skywalker and Ferus Olin destroyed the droids.
In return for destroying the droids and saving her life, Mazara helped the Jedi infiltrate the Blackwater factory, so that they could search it for signs of the criminal Granta Omega and the Zone of Self-Containment drug.