Extremists have also called on 'lone-wolf' assailants to carry out train derailments, poison food and start forest fires across Europe, the document says.
Warped propaganda urges attackers to make explosives 'as shown in tutorials' and for fanatics to conceal their radicalisation.
The warnings were analysed in a confidential, seven-page document - drawn up by the French police directorate, according to Le Parisien.
The document says that 'the threats of attack remain very high' in France and calls for extra vigilance at schools and universities.
This will extend to laboratories amid fears jihadists will aim to steal 'sensitive products or materials'.
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