KARACHI: All main Pakistani airports have been put on red alert over security threat as security is being tightened on sensitive places across the world in the aftermath of the deadly attacks in Paris.

According to details, Pakistan has also taken measures to further tighten security on all international airports in the country. A red alert has been issued and security heightened at Islamabad, Lahore, Karachi and Peshawar airports.

All temporary entry passes for the airport have been canceled while Air Security Force (ASF) commandos have been deployed at the entry points of the airports.

Islamic State militants on Saturday claimed a series of coordinated attacks by suicide bombers and gunmen in Paris that killed at least 160 people at a concert hall, restaurants and the national sports stadium. French President Francois Hollande also blamed the Islamic extremist group and called the coordinated assault on Friday night at six different sites an "act of war".

At least eight militants, all wearing suicide vests, brought unprecedented violence to the streets of the French capital in the worst attacks in Europe since the 2004 Madrid train bombings.

In the bloodiest part of a night of violence, four men armed with AK47s stormed into a rock concert at the Bataclan concert hall in eastern Paris, gunning down at least 82 people and taking dozens hostage.

Terming them ‘ruthless and heinous’, Prime Minister Nawaz Sharif on Saturday strongly condemned the Paris terror attacks and said Pakistan stands with people of France against terrorism.

Talking to the media in his Swat visit, PM said terrorists have no religion or nationality. Pakistani Parisians busy helping victims of Paris attacks . The Pakistanis living in Paris are unhurt after the deadly terrorist attacks that left over 160 dead, Pakistani ambassador said. The Pakistani Parisians are engaged in helping the victims of the terrorist attacks with many waiting in long queues to donate blood.

They have expressed determination to fight the circumstances and not to be terrorized after the attacks. Pakistan’s Ambassador to France Ghalib Iqbal said while talking media said that there are no reports of any Pakistanis living in Paris getting injured in the attacks.

He told that Pakistanis are active in doing whatever they can to help including waiting in long queues to donate blood. The Pakistani Parisians have said they will not be terrorized by the cowardly attacks and that they will fight it. The Foreign Office spokesperson has said a helpline in Pakistani embassy in France has been established where people can call to find out about their friends and relatives.