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PARIS, France (CNN)-

An 18-year-old who was considered one of three suspects in the shooting at Charlie Hebdo magazine offices has turned himself in to police, a source close to the case told the AFP news agency.

Hamyd Mourad was implicated alongside two brothers in the attack.

Mourad turned himself in late Wednesday night after seeing his name mentioned on social media, the source told AFP.

The manhunt is still going on for the two suspected gunmen: Cherif Kouachi and Said Kouachi.

Police warn the two brothers could be armed and dangerous.