Lahore blast: Pak PM Nawaz Sharif vows to avenge the attack

Lahore: As Pakistan mourns the death of 72 people in Lahore, Prime Minister Nawaz Sharif has said the government will not rest until they have avenged "every last drop of countrymen's blood".

The toll on Monday reached 72, mostly children and women, over 250 people were injured as well when the suicide bomb ripped through the parking space of Gulshan-e-Iqbal Park in Allama Iqbal town, where Christians were celebrating Easter Sunday.

The prime minister while addressing the nation in the aftermath of a the attack said: "Those who are fomenting terrorism, sectarian hatred and extremism will not be allowed to flee and will face justice," 

"The terrorists, being deprived of their refuges and training centres, have now resorted to targeting soft targets such as parks and schools."

Sharif said armed forces of the country, police and the civil institutions sacrificed their lives under the Operation Zarb-e-Azb to uproot terrorism.

Meanwhile, according to a readout from Foreign Office, Sharif cancelled his visit to the US in the wake of the attack.

"In view of the terrorist attack in Lahore, which took a heavy toll on the lives of innocent citizens of Pakistan and caused injuries to scores of people, the prime minister has decided to cancel his visit to Washington to attend the Nuclear Security Summit," a the foreign ministry statement said.