From the BBC:
Gunmen have attacked the Paris office of French satirical magazine Charlie Hebdo, killing 12 people and injuring seven in an apparent Islamist attack.
At least two masked attackers opened fire with assault rifles in the office and exchanged shots with police in the street outside before escaping by car.
The gunmen shouted "we have avenged the Prophet Muhammad", witnesses say.
President Francois Hollande said there was no doubt it had been a terrorist attack "of exceptional barbarity".
A major police operation is under way in the Paris area to catch the killers.
Four of the magazine's well-known cartoonists, including its editor-in-chief Stephane Charbonnier were reported among those killed, as well as at least two police officers.
Mr Charbonnier, 47, had received death threats in the past and was living under police protection.
French media have named the three other cartoonists killed in the attack as Cabu, Tignous and Wolinski. Reports say the attack took place during the magazine's daily editorial meeting.I'm sure we will be learning more about this in the hours to come.