PARIS: French authorities on Friday detained four officers suspected of beating and racially abusing a black music producer in Paris in a case that has shocked President Emmanuel Macron and drawn outrage from celebrities and sports stars.

Images published by the Loopsider website show how music producer Michel Zecler was repeatedly beaten by police for several minutes and subjected to racial abuse as he tried to enter his music studio Saturday evening.

Celebrities including football World Cup winners Kylian Mbappe and Antoine Griezmann condemned the beating, while French star singer Aya Nakamura said she wished the producer strength, adding "thank you to those who filmed".

A presidential official said Friday that Macron, too, was "very shocked" by the images. The incident raised questions over the future of Paris police chief Didier Lallement, already in the spotlight after the controversial forced removal of a migrant camp in Paris earlier in the week.