UPDATE: Three Gunmen Sought In Terror Attack

Prosecutors in Paris say the editor and a cartoonist for the satirical French newspaper targeted by gunmen are among the 12 people killed in today's attack.

According to police, two police officers are also among the dead-- including one who'd been assigned as the bodyguard for the cartoonist after prior death threats against him.

The three gunmen are still at large. France has now ratcheted up security to the highest levels in the capital.