A local Council in London is likely to face questions over what it knew in relation to the housing of people in a flat from which three women were rescued.
It's emerged that 13 other addresses in London are being investigated by police as investigations continue into the suspected domestic slavery case.
The inquiry began after one of three alleged victims, an Irishwoman (57), told a charity she had been held against her will for more than 30 years at the property in Lambeth.
A number of newspapers have published so-called 'love letters' one of the women is believed to have written and given to a neighbour on the estate.
London Editor with the Irish Times, Mark Hennesey, told presenter Shane Coleman on The Pat Kenny Show that Lambeth Council will be asked what they knew of the group, especially if the letters came from a literate woman who attended school locally:
The three women - a Briton (30), and a Malaysian woman (69), and the Irish victim - are believed to have suffered years of physical and mental abuse at the hands of a couple.
Police carried out house-to-house enquiries over the weekend in and around Peckford Place in Brixton, where the three women were found.
It has emerged that the couple - the man aged 73 and the woman aged 67, and of Indian and Tanzanian origin - were previously arrested in the 1970s, although police have not said why.
Officers have recovered a birth certificate for the youngest woman (30), who is believed to have lived her entire life in servitude, but no other official documents for her have been found.
Some 37 officers from the Met's human-trafficking unit are working on the case.