The suspect was identified as a 40-year-old Algerian PhD student. This is the latest in a string of attacks that has prompted Macron to form new umbrella counterterrorism task force will all the country's intelligence agencies.
French Interior Minister Bernard Cazeneuve says 20 mosques and prayer halls have been shut down in recent months and that more closures are to follow over exposure of radical views.
Points out miscommunication between France's six different intelligence units failed to prevent deadly Paris attacks in 2015.
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