A military court had awarded death sentence to the terrorists.
The prime minister has sent his recommendation to President Mamnoon Hussain under Article 105 of the Constitution.
He said the killing of the children has convinced us that the perpetrators of such crimes do not deserve mercy.
After Army Public School tragedy, the state and elected representatives unanimously decided to bring the perpetrators of this crime to justice.
Prime Minister Nawaz Sharif has said that establishment of military courts has enabled the government to bring the perpetrators of the most heinous crimes to justice in a short span of time. He said the death sentence awarded to the four terrorists, in fact, was the will of the entire nation.
AFP: With the anniversary of the December 16, 2014 attack approaching, Prime Minister Nawaz Sharif has advised President Mamnoon Hussain to reject the mercy petitions appealing the executions.
The massacre — in which Taliban gunmen coldly slaughtered more than 150 people, most of them children, at an army-run school in the northwestern city — shocked and outraged a country already scarred by nearly a decade of attacks.
It prompted a crackdown on extremism, with the establishment of military courts and the resumption of capital punishment after a six-year moratorium.
In August, after a trial that took place behind closed doors, the army announced that six militants linked to the assault would be executed, while a seventh was handed a life sentence.
It was not clear if the remaining two facing execution had also filed mercy petitions.
“Prime Minister Muhammad Nawaz Sharif has advised the president to reject the mercy petitions of all four convicted terrorists of Army Public School Peshawar terrorist attack,” the prime minister’s office said in a statement.
“The Prime Minister said that Pakistan has been changed after the Peshawar tragedy,” the statement continued.
“The brutal and merciless killings of our children convinced us that the perpetrators of such crimes do not deserve any mercy… The death sentence awarded to the four terrorists, in fact, was the will of the entire nation.”
Sharif said by rejecting the mercy petitions he was “honouring the promise made to the families” of the children killed in the tragedy, according to the statement.