PARIS, Oct 20 (Reuters) - France ordered a security review at the Louvre and checks at other cultural sites on Monday while a hunt was underway for thieves who lifted priceless crown jewels in an audacious daylight heist at the world’s most popular museum.

In what some politicians branded a national humiliation, four people broke into the Louvre on Sunday using a crane to smash an upstairs window. They took objects from a gallery for royal jewellery before escaping on motorbikes.

Some media dubbed it the “heist of the century”.

Crowds gathered outside the still-closed museum on Monday, some snapping the now infamous window.

“I’m passing by here just to immortalize this little moment, which is not very glorious for France,” said Victor Sauvageot.