Pakistani warplanes and ground forces killed at least 77 militants in a northwestern tribal region near the Afghan border, officials said Friday, days after Taliban fighters killed 148 people — most of them children — in a school massacre.Meanwhile, a Pakistani prosecutor said the government will try to cancel the bail granted to the main suspect in the 2008 Mumbai terror attacks — a decision that outraged neighboring India and called into question Pakistan’s commitment to fighting militancy.The violence at a school in Pakistan’s northwest earlier this week stunned the country and brought cries for retribution. In the wake of the mass killing the military has struck targets in the Khyber tribal region and approved the death penalty for six convicted terrorists.The military said its ground forces late Thursday killed 10 militants while airstrikes killed another 17, including an Uzbek commander. Another 32 alleged terrorists were killed by security forces in an ambush in Tirah valley in Khyber on Friday as they headed toward the Afghan border, the military said.On Friday morning, troops killed 18 more militants during a “cordon and search operation” in Khyber, the military said.The military said the army chief, Gen. Raheel Sharif, was traveling to Khyber Friday to meet with troops taking part in the ground operation.Khyber agency is one of two main areas in the northwest where the military has been trying to root out militants in recent months. Khyber borders Peshawar, where the school massacre happened, and militants have traditionally attacked the city before withdrawing to the tribal region where police can’t chase them.The other area is North Waziristan, where the military launched a massive operation in June.In the southern province of Baluchistan, Pakistani security forces killed a senior Pakistani Taliban leader along with seven of his associates in three separate pre-dawn raids, said a tribal police officer, Ali Ahmed.The Pakistani army chief late Thursday signed the death warrants of six “hard core terrorists” convicted and sentenced to death by military courts, the army said.It was unclear when the military planned to hang the six men, but authorities generally move quickly once death warrants are signed. Such executions are usually carried out at prisons under the supervision of army officers and then the bodies are handed over to relatives for burial.There was no information on the men or the crimes for which they were convicted.Prime Minister Nawaz Sharif on Wednesday announced that he would lift a moratorium on executions in terrorism-related cases. The government has not yet carried out any executions.The lifting of the moratorium was aimed at demonstrating the government’s resolve. But the decision by an anti-terrorism court on Thursday to grant bail to the main suspect in the Mumbai attacks, Zaki-ur-Rahman Lakhvi, called into question that commitment.Lakhvi is one of seven people on trial in Pakistan for the assault, but the trial has produced no results so far. It has been closed to the media.India reacted with outrage to news of Lakhvi’s pending release.Special public prosecutor Abu Zar Peerzada said he would appeal to the High Court to cancel the bail and said Lakhvi had not yet been released.