Delacroix Liberty painting defaced in French museum

French police have detained a woman accused of defacing an iconic Delacroix painting, Liberty Leading The People, at a branch of the Louvre Museum.

She was held after being seen scrawling a graffiti tag on the painting, a Romantic masterpiece painted in 1830 to celebrate a French uprising.

The museum in the northern town of Lens said the work might easily be cleaned but would be examined by a restorer.

The Louvre Lens museum only opened in the former mining town in December.

The painting by Eugene Delacroix, which featured on the pre-euro, 100-franc French banknote and reportedly inspired the Statue of Liberty in New York, is being exhibited in Lens for a year.

French media quoted unnamed legal sources as saying the graffito was a clear reference to a 9/11 conspiracy theory.

The gallery remained closed to the public on Friday.

No decision has yet been taken on whether the painting will have to be removed, the museum was quoted as saying by French broadcaster France 3.

The local prosecutor, Philippe Peyroux, told AFP news agency that the woman in custody appeared to be "unstable" and that he had requested a psychiatric examination.

He added that the woman, whose identity has not been released, had a "French-sounding name".