In an interview with France 2 channel aired Friday evening, Valls said there are 50 French nationals and probably more who are currently fighting in Syria and 40 others are moving, warning that those could be enemies to France if they returned to it.
The interview came after France 2 and other French media outlets broadcast a film on French people fighting alongside the terrorist groups in Syria.
The film titled "Truth about Syria" is a reportage made by two French directors who met the families of two French "Jihadists" who went to Syria.
The reportage had first been posted on Twitter by a Syrian living in France.
The two French fighters were shown calling upon the French people to go for "Jihad" in Syria.
The French Interior Minister pointed out that the French security forces are keeping watch over 30 fighters who had returned to France back from Syria.
Valls told France 2 channel that a number of French nationals were killed in the war, expecting that the number of French people who could get killed while fighting among the armed groups in Syria will rise.
He expressed concern about the increasing number of Europeans fighting in Syria which has already exceeded 600.
The French Interior Minister said that those French nationals fighting in Syria could be potential enemies to France in case they returned home and turned against it, calling upon the French intelligence to face this potential threat.
"Concerning our country and Europe too, we should be firm and relentless towards the terrorists as they could turn against France and against its citizens," said Valls reflecting clearly the double standards practiced by the West regarding combating terrorism.
The Syria crisis started in March 2011, when pro-reform protests turned into a massive insurgency following intervention of western and regional states.
The unrest, which took in terrorist groups from across Europe, the Middle East and North Africa, has transpired as one of the bloodiest conflicts in recent history.
As the foreign-backed insurgency in Syria continues without an end in sight, the US government boosts its political and military support to Takfiri extremists.
Washington has remained indifferent about warnings by Russia and other world powers about the consequences of arming militant groups.
NTJ/SHI