An attack on the Paris offices of a satirical newspaper on Wednesday has left at least 12 people dead and sent France into high alert.
Three heavily armed gunmen stormed the offices of weekly Charlie Hebdo, killing 10 members of the staff as well as two policemen.
Known for its controversial political cartoons, Charlie Hebdo has been a target of terrorism in the past, but never at this scale or level of brutality.
Journalists and onlookers at the scene captured the horrific attack and its aftermath. Their photos show a shocked and saddened Paris, reeling from the worst mass killing it has seen in decades.