Paris: Manhunt on for two terror suspects, one surrenders

French authorities released pictures of the two men still being sought in the deadly attack on a satirical newspaper. French brothers Said and Cherif Kouachi are both in their early 30s. Police say they should be considered armed and dangerous. One man sought in the deadly shooting at a French satirical paper has turned himself in. France raised its terror alert system to the maximum - Attack Alert - and bolstered security with more than 800 extra soldiers drafted in to guard media offices, places of worship, transport and other sensitive areas.