But the army has not been called out and the measures fall far short of martial law.
There was no sign of emergency measures in central Paris as people went to work yesterday.
Seventy-three percent of the respondents in a poll published yesterday in the daily Le Parisien said they agreed with the curfew.
Curfew violators face up to two months in jail and a 3,750 euro (US$4,400) fine, the Justice Ministry said.
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