Day of mourning announced in France as thousands gather for vigil in Paris

Thousands of Parisians have gathered in La Place de La Republique to express their condolences and show their support for satirical magazine Charlie Hebdo after 12 people were killed earlier today, when hooded gunmen opened fire at the magazine's offices.

French President Francois Hollande has decreed that tomorrow - Thursday - will be a national of day mourning.