Paris Charles de Gaulle airport has been partially closed due to the manhunt for terrorists involved in the Charlie Hebdo attack in Paris, according to reports.
Two of the four runways at the airport are reported to have been shut and flights have been diverted earlier today.
An airport spokesman stated that the flight diversions are not affecting schedules.
Three helicopters hovered above the town of Dammartin-en-Goele, 35km (22 miles) north-east of Paris and close to the airport.
The Islamist Militant brothers suspected in the attack in which 12 people died, are thought to have taken at least one hostage inside a small printing business.
Reports suggest that a gunman has taken several hostages, including women and children, in a Jewish shop in eastern Paris.
The FCO has warned British visitors to Paris or the Ile de France area to “take extra care and follow the security advice issued by the French authorities”.
It said: “There is a high threat from terrorism. Attacks could be indiscriminate. Due to ongoing threats to France by Islamist groups, and recent French military intervention against Isil, the French government has warned the public to be especially vigilant and has reinforced its own domestic and overseas security measures.”