French ministers are to hold a meeting in Paris to discuss the response to the attack on the offices of the satirical magazine Charlie Hebdo.
Immediate measures taken by French authorities after the attack which saw 12 people killed are 2,000 extra police officers and 650 soldiers deployed to Paris at notable sites in order to secure the city.
Another shooting of a police officer has been reported in southern Paris but it remains unclear if this is linked to the Charlie Hebdo attack.
French Prime Minister Manuel Valls confirmed that seven people have been detained in connection to the two brothers who French police claim carried out the brutal attack.
Hamyd Mourad, 18, has reportedly handed himself in to French authorities after being named as the third suspect.
More updates will follow.