The Louvre Museum in Paris evacuated all visitors and employees out of concern for a terrorist attack.
Louvre facilities sounded alarms and shepherded individuals out of the museum Saturday morning after receiving a written threat.
As people quickly fled, police surrounded the iconic landmark and swept the area.
France is currently experiencing a high threat alert level after a widely publicized attack by a radicalized former student.
A Chechen immigrant on France's extremist watch list allegedly stabbed a teacher to death Friday morning and wounded two others in a suspected terror attack that the country's president called an assassination.
It happened outside a school in the city of Arras, about 115 miles north of Paris, near the border with Belgium, and a suspect is in custody, according to France's interior minister Gerald Darmanin.
FRANCE ARRESTS 24 FOR ANTISEMITIC ACTS SINCE HAMAS ATTACKED ISRAEL
French authorities said they suspect terror as a motive in the attack, which comes amid a raging conflict in Israel following a terror-fueled attack by Hamas terrorists based in the Gaza Strip.
French President Emmanuel Macron said during a news briefing that police also stopped a second attempted attack after the stabbing, which he said shows "the barbarism of Islamic terrorism."
On Thursday, Darmanin ordered a country-wide ban on demonstrations in support of the Palestinians.
At least 24 people have been charged with antisemitic acts in the country since the Hamas attack on Israel last week.
