The French government is mobilizing thousands of additional security forces to protect Jewish sites across the country.
This comes after hundreds of Jewish tombstones were found vandalized in eastern France on Monday.
Bernard Cazeneuve is France's Interior Minister.
"There is an exceptional mobilization - and that's been recognized by French Jews - to ensure their security in France. Ten thousand troops are deployed around places of worship, around all the important institutions. Thousands of police and security forces are protecting Jewish sites, schools, institutions."
French police are questioning five teenagers in connection with the vandalism.
None of them are thought to be terror suspects.
France's Jewish community has been the target of numerous attacks over the past year.
This has prompted Israeli Prime Minister Benjamin Netanyahu to publically call on French Jews to migrate to Israel.
Last year, more than 7-thousand French Jews made the move.
This is more than double the number who migrated in 2013.
