French police made "several arrests" in their overnight manhunt for the two at-large suspects in Wednesday's murderous attack on satirical magazine Charlie Hebdo, Prime Minister Manuel Valls told French radio early Thursday. Valls added that preventing another attack "is our main concern," and the two suspected gunmen — brothers Said Kouachi, 32, and Cherif Kouachi, 34 — were known to law enforcement and were undoubtedly being followed before the attack.
A French interior ministry spokesman elaborated to the BBC, saying that police had detained seven friends and relatives of the suspects overnight. A third suspect, Hamyd Mourad, 18, has turned himself in to police.