French police have arrested several suspects after the attack at the satirical Charlie Hebdo newspaper in Paris, which killed 10 journalists and two policemen. The authorities raised security levels in the French capital, reports GHN based on RT.
"Several were held overnight," France's Prime Minister Manuel Valls told RTL radio. He said the suspects, who haven't been identified by police authorities yet, were known to France's intelligence services. Preventing another attack "is our main concern," added Valls.
Earlier, authorities reported that one suspect had surrendered and two gunmen remain on the run after the deadly shooting in the French capital.
The three attackers have been identified as Said Kouachi, 34, Cherif Kouachi, 32, and Hamyd Mourad, 18, AP reported citing French police. The names and photos of Kouachi brothers were later officially released by the authorities.
The 18-year-old Hamyd Mourad reportedly handed himself in at a police station in Charleville Mézières after seeing his name on the list of shooting suspects on social media, French media reported.

According to French channel iTele, Mourad claims to have alibi of his innocence, which is being investigated.
Earlier, police announced an anti-terror raid in the northeastern city of Reims, AFP reported. Dozens of police officers were dispatched to a site in the city, where one of the terror attack suspects reportedly lived.