However, it was reported that there are names not previously known to the intelligence services.
In addition to the men who have been arrested, the Spanish authorities were investigating the possible involvement in the plot of other militant Muslims previously known to Spanish intelligence officials.
"Every terrorist who attacked Paris, in January or November, was previously known by our intelligence services," Georges Fenech, of France's Parliamentary Investigative Committee on Terrorism, told VICE News correspondent Katie Engelhart.
Shire Ali was previously known to police and intelligence agencies.
One of the attackers was previously known to France's intelligence service, according to the BBC.
Former U.S. intelligence officials say the GRU has always been seen as the more brutish cousin of Russia's main intelligence agency, previously known as the KGB.
But Lord Butler's report will do a great deal to bring about, once again, the high standards of collection and analysis for which the British intelligence community was previously known.
Kim's attorneys argued that their client's limited disclosure was distinct from the troves of classified information released by Edward Snowden, a former National Security Agency contractor, and the State Department and military documents that former Army intelligence analyst Chelsea Manning, previously known as Bradley Manning, released to WikiLeaks.
Norman J. W. Goda, an Ohio University historian who reviewed the C.I.A. material, said it showed in greater detail than previously known how the K.G.B. aggressively targeted former Nazi intelligence officers for recruitment after the war.
While officers from the Home Office's Border Force, previously known as the UK Border Agency, look out for the suspect, intelligence officers are working closely with the police to try to second-guess where he would be likely to go.
