Cairo: Terrorist group Islamic State on Saturday claimed responsibility for attacks in Paris that killed over 120 people by releasing an online statement.
The statement by the group was issued in Arabic and French.
It was not immediately possible to confirm the authenticity of the statement, but it bore the group's logo and resembled previous statements issued by the group.
This came after the terror group released undated video threatening attacks on France if airstrikes on its fighters in Iraq and Syria did not stop.
According to news agency Reuters, in this ISIS video made by its media arm Al-Hayat Media Centre, a militant is seen asking French Muslims to carry out attacks.
"As long as you keep bombing you will not live in peace. You will even fear traveling to the market," said an Arabic speaking militant in the video.
Also Read: Paris attacks: Islamic State claims responsibility, France vows to hit back
French President Francois Hollande had earlier blamed the Islamic State group for orchestrating the deadliest attacks inflicted on France since World War II and vowed Saturday to strike back without mercy at what he called "an act of war."
Hollande said at least 127 people died Friday night in shootings at Paris cafes, suicide bombings near France's national stadium and a hostage-taking slaughter inside a concert hall.
President Francois Hollande has declared the state of emergency on all mainland territory and Corsica during a Cabinet meeting urgently summoned at the Elysee palace on Friday night.
"The second measure will be the closure of national borders," Hollande said.
Under French law, the state of emergency can be decided in the event of "imminent danger following serious breaches of law and order."
Also Read: Over 120 dead in multiple terror attacks in Paris, emergency declared
President Hollande said that Islamic State group is behind worst attacks on France in decades.
He said the attacks on a stadium, concert hall and Paris cafe diners were "committed by a terrorist army, the Islamic State group, a jihadist army, against France, against the values that we defend everywhere in the world, against what we are: A free country that means something to the whole planet."
He said France "will be merciless toward the barbarians of Islamic State group." France "will act by all means anywhere, inside or outside the country."
France is already bombing IS targets in Syria and Iraq as part of the U.S.-led coalition, and has troops fighting extremists in Africa.