Security has been tightened at France's biggest Christmas market in Strasbourg, following the attack on a market in Germany last week in which five people died and 200 were injured. Authorities have also extended the use of a surveillance measure used at during the Paris Olympics to monitor a dozen individuals, many of whom have no previous criminal records.
Security at the Christmas market in Strasbourg - France’s oldest and biggest, attracting some three million visitors last year - has been strict each year since 2018 after a gunman who had pledged allegiance to the Islamic State armed group killed five people and wounded 11 others.
