AB-343 was a facility managed by the Czerka Corporation. During the opening stages of the Jedi Civil War, the Galactic Republic seized control of it, but it was ultimately abandoned and fell into disrepair. After Joni Ree, a Czerka engineer, switched her allegiance to the Republic, she journeyed to the ruined lab accompanied by three Republic soldiers. Their mission was to retrieve protected data files stored within the laboratory's computer network. However, a Sith assassination squad attacked them while they were there.