(Bloomberg) -- French authorities have raised their security alert level to the maximum following the deadly Friday attack in a Moscow concert hall.

Prime Minister Gabriel Attal said the increased countrywide awareness level was justified given “Islamic State’s claim it was responsible for the attack and the threats weighing on our country.”

He made the announcement in a tweet on Sunday evening following a defense and security council organized by President Emmanuel Macron at the Elysee Palace. 

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