Sky News has obtained new video of the Charlie Hebdo magazine shooting in which masked gunmen killed 12 in Paris after the magazine published an image of Muhammad offensive to muslims.

The pair reload their weapons, before one shouts: “We have avenged the Prophet Mohammed, we have killed Charlie Hebdo.”

The gunmen were islamic fundamentalist brothers Said and Cherif Kouachi. Two of the 12 killed were Parisian police officers.