In 1959, the International Labour Organisation (ILO) published a report stating that from 1951 to 1956, a total of 650,000 Muslims from India relocated to West Pakistan. However, Visaria (1969) raised doubts about the authenticity of the claims about Indian Muslim migration to Pakistan, since the 1961 Census of Pakistan did not corroborate these figures. However, the 1961 Census of Pakistan did incorporate a statement suggesting that there had been a migration of 800,000 people from India to Pakistan throughout the previous decade. Of those who left for Pakistan, most never came back.