Some areas of the world’s most visited museum were not accessible to the public on Wednesday due to the strike.

The Louvre management has said the landmark Paris museum was partially reopened on Wednesday amid an ongoing strike by workers in the wake of purportedly difficult conditions after the stunning jewel heist in October.

“The museum is open, but some areas are not accessible due to the industrial action,” a spokeswoman said.

The world’s most visited museum also confirmed the partial reopening in the morning on social media, saying some rooms are closed due to strike action.

Hundreds of tourists lined up outside the Louvre on Wednesday as its opening was delayed while unions voted on continuing a strike over working conditions.

The museum had closed its doors to thousands of disappointed visitors on Monday after workers went on strike and protested outside the entrance. The museum is routinely closed on Tuesdays.

“We don’t know yet if we’ll open. You have to come back later,” security guards told visitors hoping to enter the museum early in the morning.

Union representatives of the 2,200-strong workforce have said they had warned for years before the daylight robbery in October about staff shortages and disrepair inside the place where world-famous works like Leonardo da Vinci’s Mona Lisa are kept.

The vote by the employees on Monday to observe a strike, which was extended on Wednesday, came after the staff expressed their anger at the museum’s management and said conditions have deteriorated after the heist.

They have also found the measures proposed by Ministry of Culture officials, including cancelling planned cuts in 2026, to be insufficient to cancel the strike so far.

Louvre director Laurence des Cars has faced intense criticism since burglars made off with crown jewels worth 88 million euros ($103m). She is due to answer questions from the French Senate on Wednesday afternoon.

In what was seen as a sign of mounting pressure on Louvre leadership, the Culture Ministry announced emergency anti-intrusion measures last month and assigned Philippe Jost, who oversaw the Notre Dame restoration, to help reorganise the museum.

Nearly 9 million people visited the museum in 2023, or roughly 30,000 visitors per day.

Polish authorities have foiled a suspected ISIS-inspired plot to attack a Christmas market, charging a student accused of preparing a mass casualty bombing, according to officials.

The case comes as Germany and the U.K. also raised security measures around religious and cultural events after the Sydney shooting Sunday in which 16 people were shot dead at a Jewish Hanukkah party on Bondi Beach.

Polish authorities say the suspect, identified as Mateusz W., 19, was detained in late November at an apartment in Lublin by officers from the Internal Security Agency (ABW).

According to Jacek Dobrzyński, a spokesperson for the Minister’s Coordinator of Special Services, investigators believe the teen had been studying how to make explosives and intended to join a terrorist organization to help carry out the attack.

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“The purpose of the crime was to intimidate many people, as well as to support the Islamic State,” Dobrzyński said in a statement shared on X.

Items linked to Islam and digital storage devices were seized, and the suspect has been remanded for three months as the Szczecin branch of ABW continues its investigation.

At a news conference, Dobrzyński also referenced a June case in which three 19-year-olds were charged over alleged extremist plots, including a reported plan to attack a school in Olsztyn.

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“You are familiar with this issue from Olsztyn; now we have another example of preparing an attack before Christmas,” he told reporters, according to GB News.

In Germany, police in Lower Bavaria also arrested five men on Dec. 12 on suspicion of preparing an attack on a Christmas market, according to reports.

Authorities said an Egyptian national described as an Islamic preacher had allegedly called for an assault during gatherings at a mosque in the Dingolfing-Landau area, per Euronews.

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Special operations forces carried out the arrests, and investigators believe the group had begun early-stage preparations.

In the U.K., counterterrorism officials stepped up armed patrols and public alert messaging across London and other major cities on Tuesday.

“Sadly, as shown by the appalling attack on Sydney’s Jewish community during a Hanukkah event, we know they can also be a target for terrorist activity,” Deputy Assistant Commissioner Jon Savell said in a press release.

He cited large festive gatherings, religious services and Christmas markets as potential targets.

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In the release posted Tuesday, he urged the British public to report anything that “doesn’t feel right” as part of the annual winter vigilance campaign.

Meanwhile, U.S. authorities say they separately disrupted a New Year’s Eve plot in Southern California.

Four alleged members of an extremist anti-capitalist, anti-government group suspected of rehearsing coordinated bombings against sites linked to two U.S. companies were arrested on Monday.