Francesca Borri, an Italian freelance journalist, was held at Cairo airport late on Thursday after arriving in Egypt on the flight from Italy, sources said on Friday.
She was allowed back to Italy later Friday.
The reason for the move, and her release, was not yet known.
The Italian embassy in Egypt is closely following the case, diplomatic sources told ANSA. The consul went to the airport immediately to help and is currently in the same room as the journalist, the sources said.