Two of the three women believed to have been held captive in London for more than 30 years met the man suspected of holding them through a "shared political ideology," London's Metropolitan Police revealed on Saturday.

Police announced they had arrested a couple on suspicion of being involved in forced labor and domestic servitude after authorities took a Malaysian woman, 69, Irish woman, 57, and 30-year-old Briton to safety from a property in Lambeth, a borough in south London. They said the man and woman were both 67 and not British nationals.

In a statement Saturday, Cmdr. Steve Rodhouse said the suspects were of Indian and Tanzanian origin and had arrived in Britain in the 1960s.

"We believe that two of the victims met the male suspect in London through a shared political ideology, and that they lived together at an address that you could effectively call a 'collective,'" he said.

Rodhouse also said the collective somehow ended, but the women continued to live with the suspects.

Fionnuala Sweeney speaks with psychologist Alan Hilfer about the challenges the freed London captives will face adjusting to post-captive life.