Pakistan has one of the worst records in the world for enforced disappearances.
Rights groups say thousands of political activists and human rights workers have been taken against their will and held in secret.
Al Jazeera has spoken to a woman whose father was seized by armed men last year.
Pakistan, officially the Islamic Republic of Pakistan, is a country in South Asia. It has a population exceeding 212.2 million, including the world’s second-largest Muslim population. It has an area of 881,913 square kilometres (340,509 square miles).
Pakistan has a 1,046-kilometre (650-mile) coastline along the Arabian Sea and Gulf of Oman in the south and is bordered by India to the east, Afghanistan to the west, Iran to the southwest, and China to the northeast. It is separated narrowly from Tajikistan by Afghanistan’s Wakhan Corridor in the northwest, and also shares a maritime border with Oman.