Paris (CNN)At least two people were being held hostage Tuesday in Paris, CNN affiliate BFMTV reported.
The Paris Police Prefecture told CNN that there was "a police intervention" underway in an advertising agency in the Rue des Petites-Écuries in the 10th arrondissement of the French capital. Law enforcement officials cordoned off the area.

Videos and images circulating on social media show police vehicles as well as heavily armed officers at the scene.