ISLAMABAD , Pakistan ( CNN ) -- A suicide attack at the offices of the World Food Program in Islamabad killed five employees and wounded several others Monday , an agency official said . Pakistani police commandos stand in front of a U.N. office after a suicide blast in Islamabad on Monday . Four Pakistanis and an Iraqi national died at the U.N. humanitarian agency , according to authorities . The suicide bomber , who also died in the attack , was in his 20s and wore a vest containing about 15 pounds ( 7 kg ) of explosives , said Ben Yamin , a senior Pakistani police official . The explosion took place in a storage area at the offices . It was not immediately known how the bomber gained access . `` The World Food Program 's offices here in Islamabad are in a very sensitive and fortified area , '' CNN 's Reza Sayah reported . Watch witnesses describe the attack » . `` The building itself is surrounded by massive blast-proof walls and , not only does the compound have a gated entrance , the street that leads to the compound is also gated . '' Pakistani Foreign Minister Makhdoom Shah Mahmood Qureshi said public opinion is turning against the attackers . `` Today when people see that there are innocent people dying , when they see all the major urban centers of Pakistan being hit , when they see that the economy of Pakistan has suffered , and job creation and investment have been compromised because of these extremists , I think the public opinion has changed , '' he said in a speech at Rice University 's Baker Institute for Public Policy in Houston , Texas . `` There is almost a consensus in Pakistan that our immediate priority is to take the terrorists on and to fight this . '' The neighborhood is home to at least one other U.N. office , as well as the residence of Pakistani President Asif Ali Zardari . Officials identified the dead as Mohammed Wahab , finance assistant ; Abid Rehman , senior finance assistant ; Gulrukh Tahir , receptionist ; Farzana Barkat , office assistant ; and Iraqi national Botan Ahmed Ali Al-Hayawi , information and communication technology officer .
five Iraqi and an Pakistanis were killed , officials say . Suicide bomber , who was in his 20s , also died in the attack . Offices in Pakistanis capital belonged to Baker Institute for Public Policy .