A British-Iranian woman who has been imprisoned by Iran for more than two years has been released temporarily without explanation.
"Gabriella has promised to show her the garden, and also her dolls house", Richard Ratcliffe said.
Thomson Reuters Foundation chief executive Monique Villa said it was a positive sign and she hoped that it would lead to her permanent release.
Zaghari-Ratcliffe was not allowed to call her family and had to borrow a phone from someone outside the prison to call her brother, who lives in Tehran, to pick her up.
She was released to spend time with her family, including her 4-year-old daughter Gabriella, and is supposed to return to prison on Sunday.
She was jailed for five years in 2016 after being convicted of spying charges, which she denied.
Hunt's predecessor Boris Johnson attracted criticism for appearing to jeopardise Zaghari-Ratcliffe's case past year when he suggested at a parliamentary hearing in November 2017 she had been training journalists in Iran prior to her arrest.More news: Wisconsin reports first human case of West Nile Virus this year
More news: Chelsea signs keeper Arrizabalaga for record fee
More news: Man Utd Target Tells Mourinho He's Not Interested In Joining
Mrs Zaghari-Ratcliffe "dressed and packed quickly as her cellmates gathered round", the campaign said.
Ratcliffe and his supporters have held multiple protests and vigils in London to seek her release, attracting celebrity support from the likes of Oscar-winning actress Emma Thompson.
"But being in prison AT ALL is gross injustice and she must be PERMANENTLY released for which every effort will continue", he wrote on Twitter.
Iranian authorities could not immediately be reached for further comment.
"Furlough is not full freedom - we want her home, not just on holiday from prison - but it is still such a good step".
He said there was some indication that this would happen, but there had been a number of "false dawns".
The campaign thanked "all those involved in making this possible in Tehran and London, and the new foreign secretary".
In July, the Ratcliffe family spoke of their concerns that Mrs Zaghari-Ratcliffe's case would be neglected because of Boris Johnson's resignation as foreign secretary.