France's Palace of Versailles is evacuating its visitors for security reasons and will be closed on Tuesday, the Chateau de Versailles said on social network X.
BFM TV, citing police sources, said a bomb squad was on its way to the site.
On October 14, one day after a teacher was killed in an attack, bomb alerts - which proved to be false - forced the evacuation of the Louvre museum, the Palace of Versailles and Paris' Gare de Lyon train station.

Trump announces commitments for Gaza reconstruction at Board of Peace
Police arrest King Charles' brother Andrew over misconduct relating to Epstein
South Korean court hands life term to ex‑President Yoon in insurrection trial
Over 20 countries to attend Trump's Board of Peace meeting on Thursday
Eight skiers found dead after California avalanche