French police have made 150 raids since the Paris attacks and found a rocket launcher in Lyon overnight
According to French TV news channel BFMTV, Valls announced that over 150 searches have taken place since the state of emergency was announced on Friday.
Findings last night included the arrest of five men in Lyon and the discovery of a number of weapons, including a rocket launcher.
Vall also said that French intelligence services had prevented several attacks since the summer and that police knew other attacks are being prepared in France as well as in the rest of Europe.
"We are making use of the legal framework of the state of emergency to question people who are part of the radical jihadist movement...and all those who advocate hate of the republic," Valls said on RTL radio.
(Reporting by Andrew Callus and Geert De Clercq, editing by Mark John)