Human Rights Watch investigated 62 cases of disappearance and arbitrary arrest linked to the Huthi rebellion.... In nearly all of the cases, arresting officials did not identify themselves or inform the detainee or his family why he was being arrested and where he was being taken. The families of persons forcibly disappeared did not know for weeks or months after their arrest whether their loved ones were alive or not, who their captors were, or where they were being held. Some still do not know.

Most detainees, when they reappeared, did so at the Political Security Organization, the security and intelligence agency directly linked to the office of President Saleh, after having been effectively “disappeared” for weeks or months without
acknowledgement of their location. Some remain missing—the earliest unresolved enforced disappearance investigated by Human Rights Watch dates back to June 2007.