A mother who went missing with her two sons for 10 days has been arrested on suspicion of abducting them.
Samantha Baldwin, 40, was held after a search for Dylan Madge, six, and Louis Madge, nine after they went missing on 27 March.
A team of 100 officers were involved in the search and a Europe-wide alert was issued.
The boys were located in "secluded accommodation" outside Ollerton, Nottinghamshire, police said.
They are in the care of child care professionals, officers added.
Chief Superintendent Helen Chamberlain told reporters they had received a tip-off about the location on Wednesday night, with the boys found on Thursday morning.
She said: "Officers were given information as a direct result of a nationwide appeal for the location of the boys.
"The boys were located in secluded accommodation, run by a small holiday business, outside Ollerton, Nottinghamshire.
"The information provided was independent of this business, however they are assisting officers with their enquiries."
Two women, aged 62 and 36, who were arrested on suspicion of assisting an offender have been released on police bail.