Hooded gunmen stormed the Paris offices of a weekly satirical magazine renowned for lampooning radical Islam, killing at least 12 people, including two police officers, in the worst militant attack on French soil in recent decades.

One of the men was captured on video shouting "Allah!" as four shots rang out. Two assailants are then seen calmly leaving the scene and remain at large.

Charlie Hebdo (Charlie Weekly) is renowned for courting controversy with satirical attacks on political and religious leaders and has published numerous cartoons lampooning the Prophet Muhammad. The last tweet on its account mocked Abu Bakr al-Baghdadi, the leader of the militant Islamic State, which has taken control of large swaths of Iraq and Syria.