"The relentless attacks on ordinary Pakistani citizens by those who want to impose an extremist mindset and lifestyle upon our country will not deter our government," said Zardari, adding that "We remain committed to fighting these murderers and expelling them from our land".

Police cordon off the blast site at a shrine in Pakistan's southern port city of Karachi, Oct. 7, 2010. At least 14 people were killed and 70 others injured in two suicide blasts that took place Thursday night at a shrine. [rshad/Xinhua]

In a statement from the PM office, Prime Minister Syed Yusuf Raza Gilani said "It is yet another heinous act of violence reflecting the deranged minds of terrorists".

The prime minister has ordered the concerned authorities for immediate enquiry into the incident and the provision of best medical facilities to the injured.

A local religious organization called Sunni Tahreek has announced a three-day mourning following the attack.

Pakistani Taliban have claimed responsibility for the blasts.

Thursday night suicide blasts remind people of the blasts of the same nature that took place at a shrine in Pakistan's eastern city of Lahore on July 1, during which 45 people were killed and about 175 others were injured.

The local media has criticised the government and the police for the poor security measures provided at the public places.

"Why these suicide blasts have always killed the ordinary civilians? " said one local resident angrily.