Updated

British police say they have rescued three traumatized women allegedly held as slaves in south London, one of whom claims to have been held against her will for more than three decades.

Metropolitan Police said a 67-year-old man and a 67-year-old woman were arrested on Thursday as part of an investigation into slavery and domestic servitude.

The investigation comes after a charity contacted police in October to relay that a woman had phoned to say she'd been held unwillingly for more than 30 years.

Police said further inquiries revealed the location of the south London house and that with the help of Freedom Charity, a 69-year-old Malaysian woman, a 57-year-old Irish woman and a 30-year-old British woman were rescued.

The force said the women are in a safe place.