Either the suspects will be able to escape, or ‘there will be a showdown’, said a member of the unit, urging reporters at the scene to be ‘vigilant'
Dozens of members of the elite anti-terror unit were surrounding an apartment building.
The Kouachi brothers hailed from the Paris suburb of Pantin, where Cherif still lived.
He was convicted in 2008 and jailed for three years for his association with a group sending jihadist fighters to Iraq.
Hamyd is believed to have been living recently in Charleville-Mezieres, in the French Ardennes. All three men had Algerian origins.
The massacre at the second-floor offices of the magazine in the heart of the French capital appeared well planned with gunmen calling out names of journalists and cartoonists before shooting them.
Police union official Rocco Contento warned: ‘There is a possibility of other attacks and other sites are being secured.’
With Files from Daily Mail
