On 21 November 2013, Metropolitan Police from the Human Trafficking Unit arrested two suspects at a residential address in Lambeth, South London. A 73-year-old ethnic Indian Singaporean man, Aravindan Balakrishnan, and a 67-year-old Tanzanian woman, his wife, Chanda Pattni, had been investigated for slavery and domestic servitude. The case centred around the Workers' Institute of Marxism–Leninism–Mao Zedong Thought commune which was led by Balakrishnan. In the early 1980s after a police raid, Balakrishnan decided to move the group's activities underground. Balakrishnan's control over his followers intensified and the commune became a prison to his followers. On 25 October 2013, three women were rescued from the commune. These were: a 69-year-old Malaysian woman (later revealed to be Aishah