PESHAWAR Pakistans main intelligence agency has quietly shifted its offices to another safe location following a deadly bombing last month. A car bomber had hit the offices of Inter Services Intelligence (ISI) in the Peshawar cantonment area on November 13 killing at least 12 people and injuring over fifty including civilians and military personnel. It was widely believed that Taliban insurgents were behind the bombing but some top police officials had openly blamed foreign elements for this terror act. The blast had destroyed three-storey building of the premier spy agency that compelled the authorities to shift it from main Khyber Road to another location within the cantonment area. Now the ISI offices have been shifted to a safe house located at Artillery Road, an official informed. He added that the offices of Chief of ISI Maj. Gen. Sajjad Ali Khan Wazir and his deputy Brig. Hanif Khan have been shifted to the 11th Corps Headquarters. The Afghan Cell as well as Foreign Cell remained functional, as these had escaped any impact of the devastation. An official said that the explosive substance used in the bombing is not available in Pakistan. It is only available with US army operational units in Afghanistan, he added. However, he did not deny the availability of such material with mercenaries of Blackwater. The security of the offices of Military Intelligence, Air Intelligence and Special Branch has already been enhanced by closing roads leading towards Shaheen Camp and airport. Military Police units have been deployed to safeguard these installations with the help of metal detectors, CCTVs and some other equipment. Boundary walls have also been fortified. A source said that Taliban and other militant groups consider Americans their major enemy but they are being ignored due to reasons best known to them. Hundreds of Americans are freely roaming in Peshawar and other cities, a concerned citizen said.