Banksy goes undercover on London's Underground

The ever-moving London artwork came on the same day Italy handed back to France a Banksy mural that had been stolen from the Paris Bataclan theatre, where militant Islamist gunmen killed scores of people in an attack in November 2015.

In June 2018, Banksy created a mural of a veiled female figure in a mournful pose on a fire-exit door of the concert venue where 90 people were killed in one of the coordinated attacks which caused 130 fatalities in the French capital.

The door, stolen in January 2019, was found last month in a farmhouse by the Italian police and given to the French ambassador in Rome on France's most important national holiday, Bastille Day.

"It is a very moving moment to get back this door on our national holiday … it was witness to the massacre that claimed the lives of 90 people," French Ambassador to Rome Christian Masset said during a ceremony at the embassy.

Spectators were not allowed near Place de la Concorde, Paris's largest square, to avoid the spread of the disease that has killed at least 30,000 people in France.