King Charles may have to change parts of his first overseas tour after rioters took to the streets.
The King and wife Queen Camilla are due in Paris from Sunday for a four-day visit to France before they move on to Germany.
It is the first overseas trip for Charles since he became monarch - and it is being viewed as a chance to celebrate British ties with the countries.
However, the trip to France comes as riots, disruption and strikes have spread across the country due to an unpopular pension reform forced through by French president Emmanuel Macron last week.
And with Charles and Camilla due to meet with Macron and carry out a high-profile engagement at the Arc de Triomphe, it's been reported Buckingham Palace is "monitoring" the volatile situation.
According to the Daily Mail, there is no suggestion that any visits will be cancelled but sources say that a "close eye is being kept on the situation" in case logistics are forced to change.
Meanwhile, some protestors have reportedly already vowed to disrupt the royal visit with strikes and protests.
According to MailOnline, protestors want to target a banquet set to be held at the Chateau de Versailles and the visit to Bordeaux.
The visit to France and Germany was announced earlier this month and will see Charles take part in a series of first including becoming the first British monarch to address the French Senate.
After a stint in France, the King and Queen Consort will then head to Germany for a packed schedule, where they will visit the cities of Berlin and Hamburg.
In Berlin, they will receive a ceremonial welcome at the Brandenburg Gate and attend a state banquet at Schloss Bellevue, while Charles will address the Bundestag, the German Federal Parliament, and become the first British monarch to carry this out.
There will also be visits to see Ukrainian refugees and the Komische Oper - a Berlin-based opera company.
While in Hamburg, they will attend a reception with members of the British community as well as lay wreaths during a short ceremony of Remembrance at the St. Nikolai Memorial, the remains of a church which was destroyed when the Allies bombed the city during the Second World War.
Buckingham Palace said: "The visit will celebrate Britain’s relationship with France and Germany, marking our shared histories, culture and values.
"It will also provide an opportunity to look forwards and demonstrate the many ways the U.K. is working in partnership with France and Germany, whether that be to tackle climate change; respond to the conflict in Ukraine; seize trade and investment opportunities or share the best of our arts and culture."
