A photograph has emerged which SLOTXO appears to show Princess Latifa, the daughter of the ruler of Dubai, who has rarely been seen or heard from in months.
The Instagram post seems to show Princess Latifa with a friend at Madrid airport.
In February, the BBC broadcast footage shot by Princess Latifa in which she said she was being held captive in a villa and feared for her life.
The footage prompted the UN to demand "concrete" proof she was still alive.
Human rights experts from the UN also said she should be released "urgently".
The United Arab Emirates (UAE) later said she was "being cared for at home".
"She continues to improve and we are hopeful she will return to public life at the appropriate time," the statement said.
What does the photo show?
This latest image appeared on the public Instagram account of Sioned Taylor. It is the third photo that Ms Taylor, who lives in Dubai and is a long time friend, has posted of Princess Latifa since mid-May.
"Great European holiday with Latifa," the caption reads. "We're having fun exploring!" Both women are wearing face masks and appear to be in Madrid-Barajas airport in Spain's capital.
David Haigh, co-founder of the Free Latifa campaign, said in a statement he was "pleased to see Latifa seemingly having a passport, travelling and enjoying an increasing degree of freedom".