Le Pen — who is poised to win a significant number of seats in French regional elections this month — accused Hollande's government of failing to tackle the terror threat properly, allowing the free movement of known jihadists on French soil and buy bomb detonators in Paris unchecked.
"With this degree of negligence and incompetence, it is at least possible to talk about the responsibility of those who govern us and even, given the scale of their failings, of a form of guilt," Le Pen said.
Francois Hollande — whose popularity was in decline ahead of the Paris attacks — has been fast to assert his authority and show strong leadership in an effort to boost his own personal profile and his socialist party's chances at the regional elections.
Meanwhile, the leader of the Republicans, Nicholas Sarkozy, also stepped into the argument, saying:
"Why didn't they carry out searches when they had the addresses [of known terrorist suspects]? Why has everything they opposed [stricter security measures] become possible today?"
French Terror Attacks
Two days later, another man, identified as Amedy Coulibaly, attacked a kosher market in Porte de Vincennes immediately killing 4 people. He then took hostages and a 4-hour siege begun. The police raided the market killing the gunman and freeing the hostages.
In June, two attackers decapitated a man in a factory in Saint-Quentin-Fallavier, near Lyon. The attacks was claimed in the name of Daesh, also known as ISIL.
Following those terror attacks — and others — the French government has been on high alert, but Le Pen claims law enforcement agencies failed to prevent the Paris attacks on November 13, despite there being a trail to the attackers.
One of the attackers, Salah Abdeslam, from Belgium, was known to the law enforcement services yet managed to buy detonators in France using his driving license as proof of identity. The ringleader, Abdelhamid Abaaoud was able to return from Syria several times via the migrant route of Greece without being detected.
There was further criticism of the lack of border controls within Europe — under the Schengen agreement — which allowed Abaaoud and his fellow attackers to travel several times between France and Belgium in the run-up to the attacks and — in Abdeslam's case — following the attacks.
It has also emerged that Abdeslam was stopped by police at the French-Belgian border but then released. He was allegedly drinking in a Belgian cafe the day after the attacks.