Mum Samantha Baldwin has been bailed after being arrested in connection with the abduction of her two sons.
As previously reported, the 42-year-old mother from Newark was found with her two sons Dylan Madge, six, and Louis Madge, on April 6.
Two other women a 62-year-old and a 36-year-old remain on police bail.
The boys were found in a secluded holiday home just outside Ollerton in Nottinghamshire.
They are now being looked after by childcare professionals.
Police are continuing their investigation.