Spanish police said Friday they had arrested a woman who allegedly sold her newborn baby girl to a couple undergoing fertility treatments for 2,000 euros ($2,300).

Officers arrested the 37-year-old last month in Mostoles, a southern suburb of Madrid, a police statement said. The couple suspected of buying the baby and two of their relatives were detained in the southern city of Cordoba.

A preliminary investigation concluded the woman “reached an economic deal” to give her newborn baby for 2,000 euros to the couple, but then “regretted selling her daughter” and asked to get her back.

The couple refused to return the baby unless the woman returned the money they had paid, plus another 1,000 euros to cover various expenses the woman said she had incurred during the month she spent with them in Cordoba before giving birth.

Police said they began investigating after the woman filed a complaint alleging that a family in Cordoba had “kidnapped” her newborn baby.

The baby was turned over to a child protection centre in Cordoba. The authorities had in 2022 removed the woman’s six other children from her custody, accusing her of neglect, police said. (AFP: Text, Excluding Headline)