France, June 14 -- France's Interior Minister, Bruno Retailleau, has local authorities to increase vigilance across the country, particularly at places of worship, festive gatherings, and sites linked to Israeli and American interests, following the Israeli attack on Iran.

In a telegram sent on Friday and seen by French press agency AFP, Mr Retailleau said that "particular vigilance must be exercised at all sites that could be targeted by acts of terrorism or malicious intent by a foreign power," as Israel and Iran continued their deadly exchange of strikes on Saturday.

Hostilities were triggered by a massive Israeli attack on Iranian military and nuclear sites, to which Tehran responded with ballistic missile strikes.

Against this bac...