PARIS – A police officer has been attacked with a hammer in front of Notre Dame Cathedral in Paris, according to a police source cited by media. Officers shot and injured the suspect.

Footage posted online by RT en Francais reporter Jonathan Moadab showed police and an ambulance near the scene, and an officer standing with a gun in his hand.

Paris police have tweeted that an “intervention” is taking place in the square in front of the cathedral, and have asked people to avoid the area.

Notre Dame Cathedral is one of the most visited tourist sites in Paris, attracting an estimated 13.6 million visitors a year.