The manhunt, which spreads into Mexico and across the nation, has grown into a huge law enforcement effort, yet officials concede that they are baffled.
A man who the police believe killed three co-workers and wounded seven other people was fatally shot by law enforcement officials on Thursday, ending a manhunt that had spread out across several Silicon Valley cities.
Amid the manhunt, a mood of fright spread through the region down to Washington, five miles to the south, and out to the surrounding suburbs in Maryland and Virginia.
French police disseminated pictures of the attackers using Twitter as part of its manhunt, while the news of the attacks quickly spread across social media.
Some serial killings that spread widespread fear and led to intense police manhunts remain unsolved.
As the manhunt for the terrorists unfolded, sadness has segued into a righteous, defiant call to spread Charlie's cartoons further and wider.
More than 300 Palestinians have been detained, including members of their defunct parliament, in which Hamas had a majority.A week into the manhunt, during which at least one Palestinian has been shot dead, Palestinian leaders worry that violence may erupt and spread.
