France's interior minister said he will prevent any further anti-US demonstrations sparked by an anti-Islam film that has triggered sometimes deadly protests across the globe.
The warning came a day after police in Paris detained around 150 people for taking part in an unauthorised impromptu protest near the US embassy that saw three officers slightly hurt after a number of clashes.
"I have issued instructions so that this does not happen again," Interior Minister Manuel Valls told France 2 television. "These protests are forbidden. Any incitement to hatred must be fought with the greatest firmness."