Chaaban was found dead in his cell on 24 September. He died after being administered tranquilizers in his cell. An autopsy on the body failed to throw a light on the exact cause of death. According to police pathologists, the body didn't show any traces of violence. Further tests were needed to determine whether there is a link between the tranquilizers and the death, but prosecutors said the results of toxicology tests would take weeks to come back from the laboratory.